Fibocom Wireless H35F WCDMA/GSM(GPRS) Dual-band wireless module User Manual FIBOCOM H350 LGA Serials Module Hardware ver1

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Document ID	2253342
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Document Description	FIBOCOM_H350 LGA Serials Module Hardware User Manual-ver1
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Permanent Confidential	No
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Document Type	User Manual
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Date Submitted	2014-04-28 00:00:00
Date Available	2014-04-30 00:00:00
Creation Date	2014-04-22 11:11:50
Document Lastmod	2014-04-22 11:11:50
Document Title	FIBOCOM_H350 LGA Serials Module Hardware User Manual-ver1
Document Creator	WPS Office 个人版
Document Author:	GHT

H350 LGA Serials Module
Hardware User Manual
Version: V1.0.3
Date: 2014-02-22
Confidential Material
This document contains information highly confidential to Fibocom Wireless Inc. (Fibocom). Fibocom
offers this information as a service to its customers, to support application and engineering efforts that use
the products designed by Fibocom. The information provided is based upon requirements specifically
provided to Fibocom by the customers. All specifications supplied herein are subject to change.
Disclosure of this information to other parties is prohibited without the written consent of Fibocom.
Copyright
Copy, Reproduce, Distribute and/or Edit of this document or part of it as well as utilization of its contents
and communication thereof to others without express authorization are prohibited. Offenders will be held
liable for payment of damages. All rights created by patent grant or registration of a utility model or design
patent are reserved. Copyright ©2013 Fibocom Wireless Inc. All rights reserved.
Trademarks Notice
The FIBOCOM Logo is registered by Fibocom Wireless Inc. All other product or service names or logos
are the property of their respective owners. Copyright ©2013 Fibocom Wireless Inc. All rights reserved.
H350 LGA Serials Module Hardware User Manual
Page 2 of 43
Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference.
(2) This device must accept any interference received,including interference that may cause undesired
operation.
This equipment has been tested and found to comply with the limits for a Class B digital device,pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions,may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
RF Exposure Compliance:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.The
antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20
conform all persons and must not be co-located or operating in conjunction with any other antenna or
transmitter.
This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antenna and users.
2) The transmitter module may not be co-located with any other transmitter or antenna.
As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM
integrator is still responsible for testing their end-product for any additional compliance requirements
required with this module installed
IMPORTANT NOTE:
In the event that these conditions can not be met (for example certain laptop configurations or co-location
with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can
not be used on the final product. In these circumstances, the OEM integrator will be responsible for
re-evaluating the end product(including the transmitter) and obtaining a separate FCC authorization.
End Product Labeling:
This transmitter module is authorized only for use in device where the antenna may be installed such that
20 cm may be maintained between the antenna and users. The final end product must be labeled in a
visible area with the following contains:
FCC ID:ZMOH35F . The grantee's FCC ID can be used only when all FCC compliance requirements
H350 LGA Serials Module Hardware User Manual
Page 3 of 43
are met.
Manual Information To the End User:
The OEM integrator has to be aware not to provide information to the end user regarding how to install or
remove this RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.
H350 LGA Serials Module Hardware User Manual
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Revision History
Version
Date
Remarks
V1.0.0
2014-01-09
Initial Version
V1.0.1
2014-01-15
Modified PIN description table
V1.0.2
2014-01-16
Modified tunable antenna level
V1.0.3
2014-02-22
Add H350-B50-10 description
Applicability Table
No.
Type
H350-A50-10
H350-A30-10
H350-B50-10
H350-B30-10
Note
Here are the module comparisons:
Model No.
GSM/GPRS/EDGE
Band(MHz)
WCDMA
Band(MHz)
HSDPA
(Mbps)
HSUPA
(Mbps)
H350-A50-10
900/1800
900/2100
21
5.76
H350-A30-10
900/1800
900/2100
7.2
5.76
H350-B50-10
850/1900
850/1900
21
5.76
H350-B30-10
850/1900
850/1900
7.2
5.76
H350 LGA Serials Module Hardware User Manual
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Contents
1 Preface....................................................................................................................................................................... 8
1.1 Scope.............................................................................................................................................................. 8
1.2 Standards....................................................................................................................................................... 8
2 Introduction.............................................................................................................................................................. 10
2.1 Description................................................................................................................................................... 10
2.2 Specifications...............................................................................................................................................10
2.3 Appearance.................................................................................................................................................. 12
3 Mechanical...............................................................................................................................................................15
3.1 Dimensions...................................................................................................................................................15
3.2 PCB Layout Design.................................................................................................................................... 16
4 Hardware Overview................................................................................................................................................17
4.1 Block Diagram............................................................................................................................................. 17
4.2 Pin Definition................................................................................................................................................18
4.2.1 Pin Map............................................................................................................................................. 18
4.2.2 Pin Description................................................................................................................................. 19
5 Hardware Interface.................................................................................................................................................24
5.1 Power Interface........................................................................................................................................... 24
5.1.1 VBAT.................................................................................................................................................. 24
5.1.2 Power Consumption........................................................................................................................25
5.1.3 VIO..................................................................................................................................................... 27
5.1.4 VRTC................................................................................................................................................. 27
5.2 ON/OFF and Reset.....................................................................................................................................28
5.2.1 Pin Definition.................................................................................................................................... 28
5.2.2 Power ON Signal............................................................................................................................. 28
5.2.3 Power off Signal...............................................................................................................................29
5.2.4 Reset Signal..................................................................................................................................... 30
5.3 Indicator Signal............................................................................................................................................31
5.3.1 Pin Description................................................................................................................................. 31
5.3.2 Indicator Description....................................................................................................................... 31
5.4 USB Interface...............................................................................................................................................32
5.4.1 USB Interface Description..............................................................................................................32
5.4.2 USB Interface Application.............................................................................................................. 33
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5.5 UART Interface............................................................................................................................................ 33
5.5.1 UART Interface Description........................................................................................................... 33
5.5.2 UART Design....................................................................................................................................35
5.5.3 Ring Indicator................................................................................................................................... 35
5.6 USIM..............................................................................................................................................................36
5.6.1 USIM Interface................................................................................................................................. 36
5.6.2 USIM.................................................................................................................................................. 36
5.6.3 USIM Design Notice........................................................................................................................38
5.6.4 USIM Hot Plug..................................................................................................................................39
5.7 Digital Audio................................................................................................................................................. 40
5.7.1 I2S...................................................................................................................................................... 40
5.7.2 I2C...................................................................................................................................................... 40
5.7.3 PCM Mode Interface....................................................................................................................... 41
5.8 ADC Interface...............................................................................................................................................41
5.9 GPS_BLANKING........................................................................................................................................ 41
5.10 BODY_SAR............................................................................................................................................... 42
5.11 Clock............................................................................................................................................................42
5.12 Others......................................................................................................................................................... 42
6 Electrical and Environmental Features...............................................................................................................43
6.1 Electrical Features...................................................................................................................................... 43
6.2 Environmental Features.............................................................................................................................43
7 RF Interface.............................................................................................................................................................44
7.1 Operation Frequency Band....................................................................................................................... 44
7.1.1 Main Antenna....................................................................................................................................44
7.2 RF PCB Design........................................................................................................................................... 44
7.2.1 Layout Guideline.............................................................................................................................. 44
7.2.2 Impedance........................................................................................................................................ 44
7.3 Antenna Design........................................................................................................................................... 45
7.3.1 Main Antenna Design Requirements........................................................................................... 45
H350 LGA Serials Module Hardware User Manual
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1 Preface
1.1 Scope
This manual provides the electrical, mechanical and environmental requirements for properly integrating
the H350 serials wireless communications module. This manual gives a complete set of hardware
features and functions that may be provided by H350, ensures the users can quickly and conveniently
develop wireless communications using H350 Module.
1.2 Standards

3GPP TS 27.007 -v6.9.0: AT command set for User Equipment (UE)

3GPP TS 27.005 -v6.0.1: Use of Data Terminal Equipment -Data Circuit terminating Equipment
(DTE-DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)

3GPP TS 23.040 -v6.9.0: Technical realization of Short Message Service (SMS)

3GPP TS 24.011 -v6.1.0: Point- to - Point (PP) Short Message Service (SMS) support on mobile
radio interface

3GPP TS 27.010 -v6.0.0: Terminal Equipment to User Equipment (TE-UE) multiplexer protocol

3GPP TS

3GPP TS 25.304-v6.10.0: User Equipment (UE) procedures in idle mode and procedures for cell
27.060 -v6.0.0: Packet domain; Mobile Station (MS) supporting Packet Switched services
reselection in connected mode

3GPP TS 25.308 -v6.4.0: High Speed Downlink Packet Access (HSDPA); Overall description;
Stage 2

3GPP TS 25.309 -v6.6.0: FDD enhanced uplink; Overall description; Stage 2

3GPP TS 23.038 -v6.1.0: Alphabets and language - specific information

3GPP TS 21.111 -v6.3.0: USIM and IC card requirements

3GPP TS 31.111 -v6.11.0 "USIM Application Toolkit (USAT)"

3GPP TS 45.002 -v6.12.0: Multiplexing and multiple access on the radio path

3GPP TS 51.014 -v4.5.0: Specification of the SIM Application Toolkit for the Subscriber Identity
Module -

Mobile Equipment (SIM-ME) interface
3GPP TS 51.010 -1 -v6.7.0: Mobile Station (MS) conformance specification; Part 1: Conformance
specification

3GPP TS 22.004 -v6.0.0: General on supplementary services

3GPP TS 23.090 -v6.1.0: Unstructured Supplementary Service Data (USSD); Stage 2
H350 LGA Serials Module Hardware User Manual
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
3GPP TS 24.008 v6.19, Mobile radio interface Layer 3 specification;
H350 LGA Serials Module Hardware User Manual
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2 Introduction
2.1 Description
H350 serials are highly integrated 3G wireless communication modules, support GSM / GPRS / EDGE
and UMTS / HSDPA / HSUPA / HSPA+.
2.2 Specifications
Specifications
Bands
H350-Axx-10
H350-Bxx-10
UMTS (WCDMA/FDD):
900/2100MHz
UMTS (WCDMA/FDD): 850/1900MHz
GSM/GPRS/EDGE: 900/1800MHz
GSM/GPRS/EDGE: 850/1900MHz
UMTS/HSDPA/HSUPA 3GPP release 7
HSUPA 5.76Mbps (Cat 6)
Data
HSDPA 21Mbps (Cat 14) or 7.2Mbps (Cat 8)
GSM 3GPP release 7
EDGE (E-GPRS) multi-slot class 33(296kbps DL, 236.8kbps UL)
GPRS multi-slot class 33(107kbps DL, 85.6kbps UL)
Dimension: 29.8mm x 17.8mm x 2.00mm
Physical
Interface: LGA
Weight: 2.5 grams
Environment
Operating Temperature: -30℃ ~ +85℃
Storage Temperature: -40℃ ~ +85℃
Performance
Operating
Voltage
Voltage: 3.3V ~ 4.5V
Normal: 3.8V
2mA (Sleep Mode)
Operating
Current (Typical
Value)
3G Idle: 13mA
3G Talk: 500mA
2G Talk: 260mA (GSM PCL5)
Class 4 (2W)： 850/900 MHz, GSM
Tx Power
(Typical Value)
Class 1 (1W)：1800/1900 MHz, GSM
Class E2 (0.5W)： 850/900 MHz, EDGE
H350 LGA Serials Module Hardware User Manual
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Class E2 (0.4W)：1800/1900 MHz, EDGE
Class 3 (0.2W)： 900/850/1900/2100 MHz, WCDMA
Rx Sensitivity
(Typical Value)
UMTS/HSPA: -109dBm
GSM: -108dBm
Interfaces
RF Interface
Antenna
1 x USB 2.0
2 x UART
MUX Over UART1
Connectivity
Multiple Profiles over USB
SPI Support
I2C Support
I2S Support
PCM, HSIC, GPIO, A/D, RTC
Data Features
Protocol Stack
EDGE
GPRS
Embedded TCP/IP and UDP/IP protocol stack
Multi-slot class 33(5 Down; 4 Up; 6 Total)
Coding Scheme MCS1~9
Multi-slot class 33(5 Down; 4 Up; 6 Total)
Coding Scheme CS1~4
CSD
UMTS(14.4kbps), GSM(9.6kbps)
USSD
Support
SMS
Voice Features
Audio Control
MO / MT Text and PDU modes
Cell broadcast
Digital Audio
Voice coders: EFR/HR/FR/AMR
Gain Control
IRA
Character Set
GSM
UCS2
HEX
AT Commands
FIBOCOM proprietary AT commands
H350 LGA Serials Module Hardware User Manual
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GSM 07.05
GSM 07.07
Firmware Loader Tool over USB/UART
Accessories
User Manual
Developer Kit
2.3 Appearance
The following picture shows the H350 Wireless Communication Module.
Top view:
Figure 2- 1 Top View
Bottom view:
Figure 2- 2 Bottom View
H350 LGA Serials Module Hardware User Manual
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3 Mechanical
3.1 Dimensions
Figure 3- 1 Mechanical Specifications
H350 LGA Serials Module Hardware User Manual
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3.2 PCB Layout Design
Figure 3- 2 Recommended PCB Layout
H350 LGA Serials Module Hardware User Manual
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4 Hardware Overview
4.1 Block Diagram
Figure 4- 1 Block Diagram
H350 LGA Serials Module Hardware User Manual
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4.2 Pin Definition
4.2.1 Pin Map
TOP (View)
Figure 4- 2 Pin Definition
H350 LGA Serials Module Hardware User Manual
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4.2.2 Pin Description
The logic electrical lever of H350 is 1.8V. The following table shows H350 pin description:
Pin#
Pin Name
I/O
Reset Value
Idle Value
Description
Power Supply
61
VBAT
62
VBAT
63
VBAT
Module main power input, voltage
64
VBAT
range: 3.3V ~ 4.2V
65
VBAT
66
VBAT
59
VIO
1.8V output
44
VRTC
I/O
Backup battery power input.
Power ON/OFF Signal
Power off signal, 200K resistor pulled
45
POWER_OFF
PU
PU
47
POWER_ON
PU
PU
RESET_ALL_N
PU
PU
27
USIM_CD
PU
PU
26
USIM_VCC
25
USIM_RST
PP
PP
USIM card reset
24
USIM_CLK
PP
PP
USIM card clock
23
USIM_DATA
I/O
PU
PU
up inside the module
Power on signal, 200K resistor pulled
up inside the module
Reset Signal
46
External reset signal
USIM
USIM card insert detected. 390K
resistor pulled up inside the module
USIM card power supply, 1.8V or
3.3V
USIM card data, 4.7K resistor pulled
up inside the module
High Speed SIM
H350 LGA Serials Module Hardware User Manual
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22
USIM_D+
21
USIM_D-
High speed SIM card USB+(not
support)
High speed SIM card USB- (not
supported)
I2S
18
I2S2_CLK0
I2S2 l Clock SCLK0
14
I2S2_WA0
I2S2 word alignment select
15
I2S2_TX
I2S2 transmit line
16
I2S2_RX
I2S2 receive line
31
USB_DP
I/O
USB+
32
USB_DM
I/O
USB-
33
VBAT
USB Power supply
USB
I2C
I2C data line，
20
I2C_SDA
I/O
PU
PU
4.7K resistor pulled up inside the
module
I2C clock line
19
I2C_SCL
PU
PU
4.7K resistor pulled up inside the
module
UART1
12
UART1_RI
UART1 Ring Indicator
56
UART1_DSR
UART1 DTE, DTE Ready
55
UART1_DTR
UART1 DCE, Module Ready Indicator,
57
UART1_DCD
UART1Carrier Detect
10
UART1_CTS
PU
PU
UART1 Clear To Send
11
UART1_RTS
UART1 Request To Send
UART1_TXD
PP
PP
UART1 Transmitted Data
H350 LGA Serials Module Hardware User Manual
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9
UART1_RXD
PU
PU
51
UART2_TXD
PP
PP
50
UART2_RXD
PU
PU
UART1 Received Data
UART2
UART2 Transmitted Data(MUX as
SPI_MTSR)
UART2 Received Data(MUX as
SPI_MRST)
ADC
Analog digital converter 1
41
ADC1
49
WAKE_UP
PU
PU
External wake-up interrupt, active low
48
EINT2
PU
PU
External interrupt, active low
29
EINT3
PU
PU
External interrupt, active low
Input voltage: 0～1.2V
EINT
USB HSIC
35
34
HSIC_USB_DAT
HSIC USB data(not supported)
HSIC_USB_STR
HSIC USB pulse(not supported)
Clock
FSYS1_26M
26M clock output
38
CLKOUT0
PP
PP
Digital audio clock output
30
CLK32K
32kclock output signal
Tunable ANT(In the developing stage, not suppurt)
ANTCTL3
ANTCTL2
ANTCTL1
ANTCTL0
Tunable antenna control signal, bit3.
2.5V
Tunable antenna control signal, bit2.
2.5V
Tunable antenna control signal, bit1.
1.8V
H350 LGA Serials Module Hardware User Manual
Tunable antenna control signal, bit0.
1.8V
Page 19 of 43
RF
73
Antenna interface, impedance is
ANT
I/O
43
SMI
17
CDI
PD
54
W_DISABLE#
O/I
52
USIF3_SCLK
I/O
reserve for SPI_CLK
53
SRDY
reserve for SPI_SRDY
13
GPIO13
GPIO13(reserve for HSIC wake up
signal)
36
GPS_Blanking
Peripheral GPS device control signal
37
BODY_SAR
PU
PU
BODY_SAR detection signal
50ohm
others
Sleep Mode Indicator
PD
Core Dump Indicator
Network control signal(can be used
as LPG or SPI_MRDY)
Not connect
NC
NC
39
NC
40
NC
42
NC
58
NC
GND
28
GND
60
GND
67
GND
68
GND
69
GND
70
GND
71
GND
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72
GND
74
GND
75
GND
76
GND
77
GND
78
GND
79
GND
80
GND
81
GND
82
GND
83
GND
84
GND
85
GND
86
GND
87
GND
88
GND
89
GND
90
GND
91
GND
92
GND
93
GND
94
GND
95
GND
96
GND
97
GND
98
GND
99
GND
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100
GND
101
GND
102
GND
103
GND
104
GND
105
GND
106
GND
107
GND
108
GND
109
GND
110
GND
H：High Voltage Level
L：Low Voltage Level
PD：Pull-Down
PU：Pull-Up
T：Tristate
OD：Open Drain
PP：Push-Pull
5 Hardware Interface
5.1 Power Interface
5.1.1 VBAT
H350 module requires a 3.3 V~ 4.2V DC power supply to provide 2A as GSM transmitter maximum
current.
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Input power supply requirements:
Parameter
Minimum Value
Recommended Value
Maximum Value
Unit
VBAT
3.3
3.8
4.5
Note:
1. Supply voltage fluctuations need to be lower than 300mV.
2. Supply voltage drop minimum value needs to be higher than 3.3V.
Filter capacitor description:
Recommended
capacitor
Application
Description
1000uF
GSM Transmit current
serge
Minimizes power supply losses during
transmit bursts. Use high capacitance value
as possible as you can.
10nF, 100nF
Digital signal noise
Filtering interference from clock and data
sources
8.2pF, 10pF
1800/1900/2100 MHz
bands
Filters transmission EMI.
33pF, 39pF
850/900 MHz bands
Filters transmission EMI.
5.1.2 Power Consumption
Parameter
Description
I OFF
RTC mode
I IDLE
Condition
Typical Value
68
Idle mode(GSM)
MFRMS
WCDMA
DRX
12.1
DRX
I SLEEP
Low power mode
(WCDMA)
DRX
I GSM-RMS
GSM850 PCL
EGSM900
H350 LGA Serials Module Hardware User Manual
I IDLE
1.9
1.5
1.5
1.8
1.8
1.7
GSM voice 1 TX slot
1 RX slot Peak
current
During TX slot
uA
12.5
Low power mode
(GSM)
Unit
I SLEEP
239.00
10
81.80
15
50.10
19
46.30
246.7
GSM-RM
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PCL
10
91.9
15
61.2
19
57.2
DCS1800 PCL
PCS1900 PCL
172.2
82.1
10
60.3
15
57.9
168.80
70.70
10
48.80
15
46.10
GSM850 PCL
10
421.10
GSM voice 1Rx slot
TX slot
15
143.60
19
116.40
DCS1800
PCL=0
EGSM900
PCL
1738.8
10
415.9
DCS1800
PCL10
GSM voice 1Rx slot
TX slot
15
135.3
19
124.2
EGSM900
PCL=10
I GSM-MAX
DCS1800 PCL
EGSM900
PCL=15
GSM voice 1Rx slot
TX slot
DCS1800
PCL=2
PCS1900 PCL
DCS1800
PCL=10
GSM voice 1Rx slot
TX slot
GSM850
PCL=10
348.7
10
141.5
15
110.3
1162.10
343.80
10
139.50
15
116.20
EGSM900
PCL=5
GSM voice 1RX slot
TX slot
H350 LGA Serials Module Hardware User Manual
GSM-MAX
1012.9
GSM850 PCL=5
I GPRS
1799.90
223.90
364.20
85.00
214.70
I GPRS
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EGSM900
PCL=10
Band8
247.9
373.7
89
220.3
5.1.3 VIO
VIO is power supply for the digital portion of the circuit inside of the module; it can be used for indicating
signal of the module. VIO can be used as a reference level of the module digital signal.
Parameter
Minimum Value
Recommended Value
Maximum Value
Unit
VIO @working
1.773
1.8
1.827
5.1.4 VRTC
VRTC supplies power for RTC clock inside the module, can be connected to external RTC battery.
Parameter
Minimum Value
Recommended Value
Maximum Value
Unit
VRTC output voltage
1.71
1.8
1.89
0.5
1.8
1.89
1.0
uA
VRTC input voltage
(RTC is working)
VRTC input current
(RTC is working)
VRTC Reference design:
Figure 5- 1 VRTC Reference Design
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Note:

R8 is the current-limiting resistance in order to ensure VRTC working normally. R8 ≥1kohm

VRTC Current consumption < 2uA;

C9 value can affect RTC hold time

You can refer to the following formula to calculate the RTC hold time: T= (1.8-0.5)*C/1=1.3C,
unit: s
For example: If C9 use 100uF capacitance, the RTC can hold about 130s.
Just don’t connect pin VRTC if no need RTC function.
5.2 ON/OFF and Reset
5.2.1 Pin Definition
H350 wireless communication module has three control signals: power on, off and reset the module.
Pin Definition:
Pin#
Pin Name
Electrical Level
Description
45
POWER_OFF
CMOS 1.8V
Power off signal
47
POWER_ON
CMOS 1.8V
Power on signal
46
RESET_ALL_N
CMOS 1.8V
External reset signal input
5.2.2 Power ON Signal
After the module is powered on, users can lower down the POWER_ON signal, then module boots up.
The following table shows the burst timing:
Parameter
Pulse Width
Condition
Minimum Value
Typical Value
Maximum Value
Unit
100
300
3000
ms
Timing control:
Figure 5- 2 Timing Control
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Reference design:
Figure 5- 3 POWER_ON Reference Design
5.2.3 Power off Signal
After lower down POWER_OFF signal, the power manage unit (PMU) of module is reset, module
changes to shutdown status.
Parameter
Pulse Width
Condition
Minimum Value
Typical Value
Maximum Value
Unit
100
300
3000
ms
Timing control:
Figure 5- 4 Timing Control
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Reference design:
Figure 5- 5 POWER_OFF Reference Design
5.2.4 Reset Signal
H350 wireless communication module supports external reset; it can restore the module to default
settings through Reset signal.
When Reset signal is Active Low by 100ms, the module will reset and restart. When users reset the
module, PMU inside the module is still on.
Note: Reset signal is sensitive, when PCB layout, please keep it away from radio frequency interference,
add debouncing capacitor near the module end is recommended. Don’t trace the Reset signal in PCB
edge or surface, it may reset ESD.
Pulse Timing requirements:
Parameters
Condition
Pulse Width
Minimum Value
Typical Value
Maximum Value
Unit
100
300
3000
ms
Recommended design:
Figure 5- 6 Reset Recommended Design
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5.3 Indicator Signal
5.3.1 Pin Description
Pin#
Pin Name
Description
54
W_DISABLE1#/LPG
Open/close network/state indication
43
SMI
Sleep Mode Indicator
17
CDI
Core Dump Indicator
49
WAKE_UP
Wake up module
5.3.2 Indicator Description
5.3.2.1 LPG Signal
LPG signal description:
Status
Mode
idle(unregistered)
high level: about 2.5s, low level: about 100ms
idle(registered)
75ms high level, 3S low level
Call
low level
Data communicating
75ms high level, 75ms low level
Sleep
high level
Note: High level voltage is 1.8V.
5.3.2.2 SMI
Module Mode
Mode
Sleep Mode
2.5S High level; 100ms Low level alternate change
Other Mode
low level
5.3.2.3 CDI Indicator
Used for Core dump indicator.
Module Mode
Mode
Normal mode
low level
Core Dump
High level
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5.3.2.4 WAKE_UP
Module Mode
WAKE_UP Signal
Description
Low level
Wake up module, switch from Sleep to Idle
High level
Stay in Sleep mode
Low level
Keep mode, no affect
High level
Module cannot set to Sleep mode
Sleep
Idle/Call
5.4 USB Interface
5.4.1 USB Interface Description
Pin#
Pin Name
I/O
Description
31
USB_DP
I/O
USB+
32
USB_DM
I/O
USB-
33
VBAT
USB power supply
H350 wireless communication module supports USB 2.0. Install the corresponding USB driver before use
on PC. After H350 wireless communication module plugged into the PC, the USB can map seven ports:

One 3G Modem/AT port for data operation

Three ports for sending AT Command

One port for trace

Two ports are reserved
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5.4.2 USB Interface Application
Reference Design:
Figure 5- 7 USB Interface Reference Design
T101 and T102 should be low capacitor TVS, it is below 1pF. No special requirement for T103.
VUSB is USB power supply, Recommend power supply range is 3.3V ~ 4.5V.
Please don’t float pin
VUSB, or USB can’t be detected.
USB_DP and USB_DM are high speed differential lines, the highest transmit speed is 480 Mbps.
PCB Layout note:

USB_DP and USB_DM lines need equal length, parallel, as short as possible.

The input and output need GND isolation.

The layout design of this circuit on the AP board should comply with the USB 2.0 high speed protocol,

With differential lining and impedance control to 90 ohm.
5.5 UART Interface
5.5.1 UART Interface Description
H350 wireless communication module provides two UART, one is 8 wire serial bus interface, and the
other is a 2 wire serial bus interface.
8 wire serial bus interface (UART1) supports flow control; users can download software or send/receive
AT through UART1. 2 wire serial bus interface (UART2) supports a few AT Commands.
Note:

UART2 only supports some common query functions.

UART2 doesn’t support hardware flow control, no CTS, RTS, DTR, DSR, DCD, RI pin.
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UART2 support MUX as SPI interface.

UART1 and UART2 signal description:
UART1
Pin#
Pin Name
I/O
Description
12
UART1_RI
UART1 Ring Indicator
56
UART1_DSR
UART1 DTE Ready
55
UART1_DTR
UART1 DCE Ready
57
UART1_DCD
UART1 Carrier Detect
10
UART1_CTS
UART1 Clear to send
11
UART1_RTS
UART1 Request to send
UART1_TXD
UART1 Transmitted Data
UART1_RXD
UART1 Received Data
Pin#
Pin Name
I/O
Description
50
UART2_RXD
UART2 Transmitted Data
51
UART2_TXD
UART2 Received Data
UART2
5.5.2 UART Design
The following table show the signal direction when H350 wireless communication module (DCE) UART1
connects to PC (DTE):
Application MCU(DTE)
Signal Direction
H350 Module (DCE)
RXD
UART1_TXD
TXD
UART1_RXD
RTS
UART1_CTS
CTS
UART1_RTS
DSR
UART1_DTR
DTR
UART1_DSR
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RI
UART1_RI
DCD
UART1_DCD
The following table shows the signal direction when H350 wireless communication module (DCE) UART2
connects to PC (DTE):
Application MCU(DTE)
Signal Direction
H350 Module (DCE)
RXD
UART2_TXD
TXD
UART2_RXD
Note: Module UART high level is 1.8V, please use external level shifter if connect to 2.8V or 3.3V IO
interface.
When you design:
Level shift from 1.8V to 3.3V, SN74LVC2G07 is recommended.
When UART1 communicating with PC, first translates from 1.8V to 3.3V, and then uses SP3238 to
translate.
When UART2 communicating with PC, first translates from 1.8V to 3.3V, and then uses SPIEX3232EEA
to translate level. Notice the signal direction when translate level.
5.5.3 Ring Indicator
UART1_R1 is used for indicating incoming call and SMS, sending pulse to host application program.
Operation Mode
Status
Default mode
Low level
Ringing
1s high level, 1s low level, cycling
Incoming message
150ms pulse
5.6 USIM
H350 wireless communication module supports USIM and high speed SIM card, does not support 8 line
smart USIM yet.
5.6.1 USIM Interface
Pin#
Pin Name
I/O
Description
26
USIM_VCC
USIM power supply output
25
USIM_RST
USIM Reset signal
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24
USIM_CLK
USIM clock signal
23
USIM_IO
I/O
USIM data signal
28
GND
GND
USIM ground
USIM insert detect signal
27
USIM_CD
Low level indicates SIM card is not inserted
High level indicates SIM card is inserted
5.6.2 USIM
5.6.2.1 Normally Closed SIM Circuit Design
Reference Design:
Figure 5- 8 Normally Closed SIM Interface Reference Design
Normally closed SIM:
1）Pull out SIM card, pin 7 and pin 8 are shorted.
2）Plug SIM card, pin 7 and pin 8 are disconnected.
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5.6.2.2 Normally Open SIM Circuit Design
Reference Design:
Figure 5- 9 Normally Open SIM Interface Reference Design
Normally Open SIM:
1）Pull out SIM card, pin 7 and pin 8 are disconnected.
2）Inset SIM card, pin 7 and pin 8 are shorted.
Note:

For better EMC performance, SIM card holder should be close to module

Filtering capacitor should be close to SIM card pin

The interface need add ESD protection, ESD should be close to SIM card pin

USIM_IO is already pulled up inside the module
USIM_CD support SIM hot plug, high level activated default (detect level can be changed by AT
command). If high level is detected, it means SIM card is inserted.
5.6.3 USIM Design Notice
The SIM interface and signals design is extremely important.
There are several design guidelines that must be followed:
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
The layout signals of the SIM card should be away from any possible EMI interference sources, such
as the RF antenna and digital switching signals.

To ensure signal integrity, the length between SIM interface signals and module should not exceed
100 mm

To avoid crosstalk between USIM_CLK and USIM_IO, it is recommended to route them separately on
the application board, and preferably isolated by a surrounding ground plane.

The SIM card signals should be protected from ESD using very low capacitance protective elements
(like Zener diode). The recommended part no of ESD is AVR-M1005C080MTAAB (TDK). ESD
component should layout with SIM hold closely.
5.6.4 USIM Hot Plug
H350 supports SIM hot plug.
5.6.4.1 Hardware Connection
SIM hot plug function interacts with USIM_CD signal.
When no SIM card, USIM_CD is low level; insert SIM, USIM_CD is high level.
Explanation:
For normally closed SIM card circuit, as shown in Figure 5-8, USIM_CD connects Pin8 (SW2) of U2, Pin7
(SW1) connects GND. When there is no SIM card, SW2 and SW1 are shorted, so, SW2 is low level, when
insetting SIM card, SW1 and SW2 are disconnected, USIM_CD is pulled up.
For normally open SIM card circuit, as shown in Figure 5-9, USIM_CD connects Pin8 (SW2) of U2, and it
also connects GND with 47K resistor, Pin 7 is pulled up with 47K resistor. When no SIM card, SW2 and
SW1 are disconnected, so SW2 is low level, after inserting SIM, SW2 and SW1 are shorted, USIM_CD is
pulled up.
5.6.4.2 Software Configuration
“+MSMPD” AT command defines the SIM card status detection feature.
When set AT+MSMPD=0, the SIM detected feature deactivated. Module does not detect USIM_CD
signal.
When set AT+MSMPD=1, the SIM detected feature activated. USIM_CD pin can test whether SIM card is
onsite or not.
SIM_CD is High level, SIM card is onsite, and module registers the network automatically.
SIM_CD is Low level or not connected, SIM card is offsite and module drops out the network.
Note: The +MSMPD default value is “1”. USIM_CD is only used for SIM card hot plug detecting,
Module won’t detect SIM_CD at the first starting (it means the module will read SIM card data and register
network at the first time starting, no matter pin SIM_CD is high level or low level).
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5.7 Digital Audio
H350 supports digital audio I2S interface, this interface supports normal I2S mode and PCM mode. The
level of I2S interface is 1.8V.
I2S signal description:
Pin#
Pin Name
I/O
Description
18
I2S2_CLK0
Bit Clock
14
I2S2_WA0
Left & right channels clock (LRCK)
15
I2S2_TX
Serial data output
16
I2S2_RX
Serial data input
20
I2C_DATA
I/O
I2C control signal I/O
19
I2C_SCL
I2C control clock
5.7.1 I2S
H350
Signal Direction
Audio CODEC I2S Port
I2S2_CLK0
I2S_CLK
I2S2_WA0
I2S_LRCK
I2S2_RX
I2S_SDIN
I2S2_TX
I2S_SDOUT
CLKOUT0
I2S_MCLK
5.7.2 I2C
H350
Signal Direction
Audio CODEC I2C Port
I2C_SDA
I2C_SDA
I2C_SCL
I2C_SCL
Note:

I2S can work in master mode or slave mode

It supports various audio sample rates (48 KHz, 44.1 KHz, 32 KHz, 24 KHz, 22.5 KHz, 16 KHz, 12
KHz, 11.025 KHz and 8 KHz).
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5.7.3 PCM Mode Interface
H350
Signal Direction
Audio CODEC PCM Port
I2S2_CLK0 (PCM_CLK, PCM clock signal )
PCM_CLK (PCM clock signal)
I2S2_WA0 (PCM_SYNC, PCM frame
synchronization signal )
PCM_SYNC (PCM frame
synchronization signal )
I2S2_RX (PCM_DIN, PCM data input)
PCM_DOUT (PCM data output)
I2S2_TX (PCM_DOUT, PCM data output)
PCM_DIN (PCM data input)
Note:

PCM mode can configured to master mode and slave mode

It supports short frame synchronization for 16 bit, 32bit, 48bit and 64bit.

Supports sending data in burst mode and continuous mode

It supports various audio sample rates (48 KHz, 44.1 KHz, 32 KHz, 24 KHz, 22.5 KHz, 16 KHz, 12
KHz, 11.025 KHz and 8 KHz).
5.8 ADC Interface
H350 supports ADC detection, with accuracy to 10 bit. The input voltage requirement for ADC: 0~1.2V.
The following table shows the ADC signal description:
Pin#
Pin Name
I/O
Description
41
ADC1
ADC input
5.9 GPS_BLANKING
The defaulted-value is low level (output). When module works with GSM network, pin GPS Blanking and
pin GSM burst will output same pulse signal. Because GSM TX may interfere with GPS RX, AP will close
or stop GPS RX when AP detects GPS Blanking signal.
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Pin#
Pin Name
I/O
Description
36
GPS_BLANKING
Peripheral GPS device control signal
5.10 BODY_SAR
H350 support BODY_SAR function. Pin BODY_SAR is an input I/O (its signal comes from AP output
interface), default-value is high level, active low. With peripheral sensor, AP can detect the closing body
and output low level to BODY_SAR, getting the interrupt, the module will reduce it’s power. The threshold
value(power value) can be configured by AT command.
Pin#
Pin Name
I/O
Description
37
BODY_SAR
BODY_SAR detection
Pin Name
I/O
Description
FSYS1_26M
26Mclock output(peripheral GPS device can use)
38
CLKOUT0
26MHz main clock output(I2S can use）
30
CLK32K
32K clock output
5.11 Clock
Pin#
Note: FSYS1_26M is more accurate than CLKOUT0.
5.12 Others
The module does not support GPIO yet.
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6 Electrical and Environmental Features
6.1 Electrical Features
This table shows the electrical features range of H350.
Parameter
Minimum Value
Maximum Value
Unit
VBAT
4.5
Digital Signal
1.9
6.2 Environmental Features
This table shows the environmental features of H350.
Parameter
Minimum Value
Maximum Value
Unit
Operational Temperature
-30
+85
°C
Storage Temperature
-40
+85
°C
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7 RF Interface
7.1 Operation Frequency Band
7.1.1 Main Antenna
Operating Band
Tx
Rx
UMTS 2100 (Band I IMT)
1920–1980 MHz
2110–2170 MHz
UMTS 1900 (Band II
1850–1910 MHz
1930–1990 MHz
824–849 MHz
869–894 MHz
880–915 MHz
925–960 MHz
GSM 850
824–849 MHz
869–894 MHz
GSM 900
880–915 MHz
925–960 MHz
DCS 1800
1710–1785 MHz
1805–1880 MHz
PCS 1900
1850–1910 MHz
1930–1990 MHz
UMTS 850 (Band V
UMTS 900 (Band VIII
IMT)
IMT)
IMT)
7.2 RF PCB Design
7.2.1 Layout Guideline
As H350 does not have a RF connector, so for RF line, microstrip line is recommended. The shorter the
better, insert loss is less than 0.2dB; impedance is less than 50ohm.
It is to mount H350 module and antenna connector to the same side of layout.
Add a π-type circuit (two parallel device ground pin directly to the main land) for antenna matching.
Figure 7- 1π-type Circuit
7.2.2 Impedance
The RF lines impedance should not exceed 50 ohm.
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7.3 Antenna Design
7.3.1 Main Antenna Design Requirements
(1) Antenna Efficiency
Antenna efficiency is the ratio between antenna input power and radiation power. The radiation power of
an antenna is always lower than the input power due to the following factors: return loss, material loss,
and coupling loss.
Efficiency of the master antenna > 40% (–4dB)
(2) S11 or VSWR
S11 (return loss) indicates the degree to which the input impedance of an antenna matches the reference
impedance (50 ohm). S11 shows the resonance feature and impedance bandwidth of an antenna. Voltage
standing wave ratio (VSWR) is another expression of S11. S11 relates to the antenna efficiency. S11 can
be measured by vector analyzer.
S11 of the master antenna < –10 dB
(3) Polarization
The polarization of an antenna is the orientation of the electric field vector that rotates with time in the
direction of maximum radiation.
Linear polarization is recommended: it would be better if the polarization direction of diversity antenna is
different from main antenna.
(4) Radiation Pattern
Radiation pattern refers to the directional dependence of the strength of the radio waves from the antenna
or other source.
The radiation pattern of half wave dipole antennas is the best for wireless terminals. If it is built-in antenna,
PIFA antenna is recommended:
Antenna area (H x W x L): 6mm x 10mm x 100mm. PIFA or IFA antenna is recommended.
Radiation Pattern: Omni-directional
(5) Gain and Directivity
The directivity of the antenna is the electromagnetic field strength of the electromagnetic wave in each
direction. An antenna's power gain is a key performance figure which combines the antenna’s directivity
and electrical efficiency.
Antenna gain ≤ 2.5dBi
(6) Interference
Besides the antenna performance, the interference on the PCB board also affects the radio performance
(especially the TIS) of the module. To guarantee high performance of the module, the interference
sources on the user board must be properly controlled. On the PCB board, there are various interference
sources that can affect the module, such as the speaker, LCD, CPU, FPC trace and audio circuits, the
power supply should be far away from antenna, notice isolation, shield and filtering processing issues.
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(7) TRP/TIS
TRP (Total Radiated Power):

W900/W850/W1900/W2100>19dBm

GSM850/GSM900>28dBm

DCS1800/PCS1900>25dBm
TIS (Total Isotropic Sensitivity) :

W900/W850<-102dBm

W1900/W2100<-103dBm

GSM850/GSM900<-102dBm

DCS1800/PCS1900<-102dBm
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