Ai Thinker Technology ESP01M ESP-01M User Manual
Shenzhen Ai-Thinker Technology co., LTD ESP-01M
User Manual
ESP-01/07/12 Series Modules User's Manual
Version 1.1
Ai-Thinker Inc
Copyright
(c)
2017
Ai-Thinker
ESP-01/07/12
Series
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FCCSTATEMENT
This device complieswith Part 15 of the FCC Rules. Operationis subject to the following
twoconditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may
cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Please notice that if the FCC identification number is not visible when the module is
installed inside anotherdevice, then the outsideof the device into which the module isinstalled
must also display a label referring to the enclosed module. This exterior label can use wording
such as thefollowing: “Contains FCC ID:2AHMR-ESP01M” or “Contains FCC ID:2AHMR-ESP07S”
or “Contains FCC ID:2AHMR-ESP12S” or “Contains FCC ID:2AHMR-ESP12F” any similar wording
that expresses the same meaning may be used.
This equipment complies with FCC radiation exposure limits setforth for an uncontrolled
environment.Thisequipment should be installed and operated with a minimum distance of
20cm between the radiator & your body. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
CE Mark Warning
The module is limited to OEM installation ONLY.
The OEM integrator is responsible for ensuring that the end-user has no manual instruction
to remove or install module.
The module is limited to installation in mobile application;
A separate approval is required for all other operating configurations, including portable
configurations with respect to Part 2.1093 and difference antenna configurations.
There is requirement that the grantee provide guidance to the host manufacturer for
compliance with Part 15B requirements.
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Revision Record
Date Version Author Release Notes
2017.7.1 V1.0 Wang Chong First Version
2017.9.4 V1.1 Wang Chong Add ESP-01M, Delete ESP-12E
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Table Of Contents
1 Product Overview....................................................................................................1
1.1 Product Features.......................................................................................... 1
1.2 Application Plan.......................................................................................... 1
2 Module Interface..................................................................................................... 2
2.1 Package Size................................................................................................ 2
2.1 Pin Definition...............................................................................................5
2.2 Boot Mode....................................................................................................6
3 Electrical Characteristics........................................................................................ 7
3.1 Maximum Ratings....................................................................................... 7
3.2 Suggested Working Environment.............................................................. 7
3.3 Digital Port Features....................................................................................7
3.4 Power Consumption.................................................................................... 7
3.5 Transmit Power............................................................................................9
3.6 Receive Sensitivity...................................................................................... 9
4 Hardware Guidance.................................................................................................9
4.1 Typical Applications................................................................................... 9
4.2 PCB Antenna Display Instructions.......................................................... 11
4.3 Module Peripheral Routing Instructions..................................................12
4.4 GPIO Level Conversion............................................................................12
4.5 Power Supply Reference Design..............................................................13
4.6 ADC Supply Reference Design................................................................13
4.7 Automatically Download Reference Design...........................................14
4.8 Reflow oven temperature curve................................................................14
5 Usage Guide.......................................................................................................... 15
5.1 Introduction To The Basic AT Command...............................................15
5.1.1 AT....................................................................................................15
5.1.2 AT+GMR........................................................................................15
5.1.3 AT+RST......................................................................................... 15
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5.1.4 AT+RESTORE.............................................................................. 16
5.2 Use Examples.............................................................................................16
5.2.1 TCP Communication Test.............................................................16
5.2.2 UDP Communication Test............................................................ 18
6 FAQ........................................................................................................................20
6.1 Garbage Instructions When Power Is On................................................ 20
6.2 How To Shield The Power When The Garbled...................................... 20
6.3 Can’t Burn Normally..............................................................................20
6.4 SDK Development Environment..............................................................21
6.5 Startup Information Description...............................................................21
7 Module Selection.................................................................................................. 21
8 Contact US.............................................................................................................23
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1 Product Overview
ESP8266 series wireless module is a series of cost-effective Wi-Fi SOC module
which can be developed independently. The series modules support the standard
IEEE802.11 b/g/n protocol, built-in complete TCP/IP protocol stack. Users can use
this series of modules to add networking capabilities to existing devices, or to build
standalone network controllers.
Ai-Thinker Technology can provide customers with a complete hardware,
software reference program, in order to shorten your product development cycle, for
your cost savings.
1.1 Product Features
The smallest 802.11b/g/n Wi-Fi SOC module
Using low-power 32-bit CPU, can also serve as the application
processor
Clocked at up to 160MHz
Built-in10bithighprecisionADC
Support UART/GPIO/IIC/PWM/ADC/HSPI and other interfaces
Integrated Wi-Fi MAC/BB/RF/PA/LNA
Supports multiple sleep modes, deep sleep current as low as 20uA
Embedded Lwip protocol stack
Support STA/AP/STA + AP work mode
Supports Smart Config/AirKiss key distribution network
Serial port rate up to 4Mbps
General AT commands can be used quickly
Support SDK secondary development
Supports serial local upgrade and remote firmware upgrade (FOTA)
1.2 Application Plan
Industrial wireless control
Infant Monitor
IP camera
Sensor network
Household appliances
Home automation
Smart socket/intelligent light
Mesh network
Wearable electronic products
Wireless location sensing device
Security ID tag
Wireless positioning system
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2 Module Interface
2.1 Package Size
Figure 2.1 ESP-01/ESP-01S pin dimensions
2.2 ESP-01M
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Figure 2.3 ESP-07 pin dimensions
Figure 2.4 ESP-07S pin dimensions
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Figure 2.5 ESP-12F pin dimensions
Figure 2.6 ESP-12S pin dimensions
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Table 2.1 ESP series module size table
Model Length
(mm)
Width
(mm)
Height
(mm
PAD size
(mm)
Pin
Spacing
(mm)
Shield
ed
Shell
(mm)
Thickness
(mm)
ESP-01
ESP-01S 24.7 14.4 11.0 1.5 x 1.5 2.54 - 1.0±0.1
ESP-01M 18 18 2.8±0.2 - 0.8 2.0 0.8±0.1
ESP-07 21.2 16.0 3±0.2 - 1.5 2.0 0.8±0.1
ESP-07S 17.0 16.0 3±0.3 1 x 1.2 1.5 2.0 0.8±0.1
ESP-12F 24.0 16.0 3±0.2 1.5 2.0 0.8±0.1
ESP-12S 24.0 16.0 3±0.2 1 x 1.2 1.5 2.0 0.8±0.1
2.1 Pin Definition
Table 2.2 ESP Series Module Pin Function Definitions
Pin Number
Pin
Name Remarks
01
01S 01M
07
07S
12S
12F
7 18 1 1 RST Reset Pin, Active Low
-16 2 2 ADC AD conversiont, Input voltage range
0~1V,
the
value
range
is
0~1024.
6 9 3 3 EN Chip Enabled Pin, Active High
- 17 4 4 IO16 Connect with RST pin to wake up
Deep Sleep
-15 5 5 IO14 HSPI_CLKIR_TI2C_SCL
I2SI_WS
-14 6 6 IO12 HSPI_MISO
- 5 7 7 IO13 HSPI_MOSI; UART0_CTS
8 2 8 8 VCC Module power supply pin, the
voltage
range
of
3.0
~
3.6V
- - - 9CS0 Flash chip select signal
- - - 10 MISO Slave Output Master Input
- 11 - 11 IO9 GPIO9
-12 - 12 IO10 GBIO10
- - - 13 MOSI Master Output Slave Input
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- - - 14 SCLK Clock
1 1 9 15 GND GND
- 6 10 16 IO15 HSPI_CSU0_RTSI2SO_BCK
2 7 11 17 IO2 U1_TXDI2C_SDAI2SO_WS
3 8 12 18 IO0 GPIO0HSPI_MISOI2SI_DATA
- 10 13 19 IO4 HSPI_MOSIU0_CTSI2SI_BCK
-13 14 20 IO5 IR_R
4 4 15 21 RXD GPIO3I2SO_DATA
5 3 16 22 TXD GPIO1
Note: Only GPIO4 and GPIO5 are low at boot time, the other GPIO are high.
2.2 Boot Mode
Table 2.3 Description of the ESP series module boot mode
Mode CH_PD
(EN) RST GPIO15 GPIO0 GPIO2 TXD0
Download
mode high high low low high high
Running
mode high high low high high high
Chip Test
mode high high - - - low
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3 Electrical Characteristics
3.1 Maximum Ratings
Table 3.1 Maximum Ratings
Rated value condition Value Unit
Storage Temperature - -40 ~ 90
Maximum Welding
Temperature
-250
Supply Voltage IPC/JEDEC
J-STD-020
+3.0 ~ +3.6 V
3.2 Suggested Working Environment
Table 3.2 Recommended working environment
Work Environment Name Min Typ Max Unit
Operating Temperature -20 20 85
Supply Voltage VDD 3.0 3.3 3.6 V
3.3 Digital Port Features
Table 3.3 Digital Port Features
Port Name Min Typ Max Unit
Input logic level low VIL -0.3 - 0.25*VDD V
Input logic level high VIH 0.75 * VDD - VDD + 0.3 V
Output logic level low VOL N-0.1 * VDD V
Output logic level
high VOH 0.8 * VDD -N V
Note: Unless otherwise specified, the test conditions are: VDD = 3.3 V and
temperature 20 .
3.4 Power Consumption
All measurements are made at the antenna interface without SAW filters.
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All transmit data is based on a 90% duty cycle measured in the continuous firing
mode.
Table 3.4 Power consumption
Mode Min Ty
p
Ma
xUnit
Transmit 802.11b, CCK 11Mbps, POUT = +
17dBm
170 mA
Transmit 802.11g, OFDM 54Mbps, POUT = +
15dBm
140 mA
Transmit 802.11n, MCS7, POUT = + 13dBm 120 mA
Receive 802.11b, packet length 1024 bytes,
-80dBm
50 mA
Receive 802.11g, packet length 1024 bytes,
-70dBm
56 mA
Receive 802.11n, packet length 1024 bytes,
-65dBm
56 mA
Modem-Sleep20 mA
Light-Sleep2mA
Deep-Sleep20 uA
Power Off 1 uA
Note: Modem-Sleep is used to require the CPU to remain in operation, such as PWM or I2S.
When there is no data transmission while maintaining a WiFi connection, power off the WiFi
Modem circuit according to the 802.11 standard (eg U-APSD). For example, in DTIM3, every
sleep 300mS, wake up 3mS receive AP Beacon package, etc., the overall average current of about
20mA.
Note : Light-Sleep for CPU can be suspended applications, such as WiFi switch. If there
is no data transmission while maintaining a WiFi connection, the WiFi Modem circuit can be
switched off and the CPU is powered down according to the 802.11 standard (eg U-APSD). For
example, at DTIM3, every sleep 300 ms, wake up 3 ms to receive AP's Beacon packets, etc., the
overall average current is about 2 mA.
Note: Deep-Sleep is used for applications that do not have to keep the WiFi connection for a
long time, such as a sensor that measures the temperature once every 100 seconds. Every 300 s
wake up after 0.3s - 1s connected to the AP to send data, the overall average current can be much
smaller than 2mA.
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3.5 Transmit Power
Table 3.5 RF parameters
Describe Min Typ Max Unit
802.11b@11Mbps 14 16 18 dBm
802.11g@54Mbps 12 14 16 dBm
802.11n@HT20, MCS7 11 13 15 dBm
3.6 Receive Sensitivity
Table 3.6 Receiving Sensitivity
Parameter Min Typ Max Unit
DSSS, 1 Mbps -95 dBm
CCK, 11 Mbps -80 dBm
6 Mbps (1/2 BPSK) -88 dBm
54 Mbps (3/4 64-QAM) -70 dBm
HT20, MCS7 (65 Mbps, 72.2 Mbps) -67 dBm
4 Hardware Guidance
4.1 Typical Applications
Note: You can’t use USB to TTL 3.3V or 5V power supply, it is recommended
to use two dry batteries or after conversion through the LDO 3.3V, it is strongly
recommended to buy a new development board.
Figure 4.1 Typical application of ESP-01
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Figure 4.2 Typical application of ESP-01S
Figure 4.3 Typical application of ESP-01M
Figure 4.4 Typical application of ESP-07
Figure 4.5 Typical application of ESP-07S
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Figure 4.6 Typical application of ESP-12E/ESP-12F
Figure 4.7 Typical application of ESP-12S
4.2 PCB Antenna Display Instructions
The ESP8266 series module can be soldered to the PCB board. In order to get
the best RF performance of the end product, please pay attention to the rational
design of the module and the placement of the antenna on the bottom plate according
to this guide.
Option 1 (recommended):
Place the module along the edge of the PCB board, and the antenna is placed
outside the frame or along the board and the bottom is hollowed out;
Option 2:
The module placed along the PCB board side, the antenna placed along the
board and the bottom of the hollow;
Option 3:
Place the module along the board side of the board, the antenna placed along the
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board and the bottom are not copper.
Figure 4.7 ESP-12S antenna placement instructions
4.3 Module Peripheral Routing Instructions
The ESP8266 series modules integrates high-speed GPIO and peripheral
interfaces, which can cause severe switching noise. If some applications require high
power and EMI characteristics, it is recommended to connect 10 to 100 ohms in
series on digital I/O lines. This can suppress overshoot when switching power
supplies and make the signal smooth. Series resistance can also prevent electrostatic
discharge (ESD) to some extent.
4.4 GPIO Level Conversion
Figure 4.8 Transistor level conversion
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4.5 Power Supply Reference Design
Figure 4.9 Power supply reference
4.6 ADC Supply Reference Design
Figure 4.10 ADC supply reference
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4.7 Automatically Download Reference Design
Figure 4.11 Automatically Download Reference Design
4.8 Reflow oven temperature curve
Figure 4.12 Reflow furnace temperature curve
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5 Usage Guide
ESP8266 series module factory default built-in AT firmware, and the default
baud rate of 115200, can refer to 4.1 typical application diagram to build the
minimum system circuit, then the AT command operation.
Serial and network debugging tools download: http://wiki.ai-thinker.com/tools
5.1 Introduction To The Basic AT Command
This chapter only describes the common AT commands, please refer to
http://wiki.aithinker.com/esp8266/docs#at
5.1.1 AT
parameters No
Description Test AT is OK
Example AT
OK
5.1.2 AT+GMR
parameters No
Description Returns the firmware version information
Example
AT+GMR
AT version:1.2.0.0(Jul 1 2016 20:04:45)
SDK version:1.5.4.1(39cb9a32)
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Dec 2 2016 14:21:16
OK
5.1.3 AT+RST
parameters No
Description soft restart module
Example
AT+RST
OK
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5.1.4 AT+RESTORE
parameters No
Description Reset the module to factory settings
Example
AT+RESTORE
OK
5.2 Use Examples
This section explains how to configure two modules through the serial port on
the PC side to communicate with each other over TCP/UDP. For more examples,
please refer to: http://wiki.ai-thinker.com/esp8266/examples/at_demo. Test, through
the PC side instead of one end of the module to establish the appropriate connection.
5.2.1 TCP Communication Test
TCP Server is in AP mode and TCP Client is Station mode.
TCP Server Configuration
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AT+CWMODE=2 //configured for AP mode
OK
AT+CWSAP_DEF="TCP_Server","12345678",5,4 //Configure AP
information
OK
AT+CIFSR //Query the local IP address
+CIFSR:APIP,"192.168.4.1"
+CIFSR:APMAC,"a2:20:a6:19:c7:0a"
OK
AT+CIPMUX=1 //open multiple links
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OK
AT+CIPSERVER=1 //open the server
OK
0,CONNECT //There is a client connected to the server
+IPD,0,10:Ai-Thinker //received 10 data (Ai-Thinker)
AT+CIPSERVER=0 //Close the server
OK
0,CLOSED //TCP connection is off
TCP Client Configuration
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AT+CWMODE=1 //configured for station mode
OK
AT+CWJAP_DEF="TCP_Server","12345678" //Connect to AP
WIFI CONNECTED
WIFI GOT IP
OK
AT+CIFSR //Query the local IP address
+CIFSR:STAIP,"192.168.4.2"
+CIFSR:STAMAC,"5c:cf:7f:91:8b:3b"
OK
AT+CIPMUX=0 //open single link
OK
AT+CIPSTART="TCP","192.168.4.1",333 //Connect to TCP server
CONNECT
OK
AT+CIPSEND=10 //send 10 bytes of data to the server side
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OK
>//After the emergence of the symbol serial port to send
Ai-Thinker (without carriage return line)
Recv 10 bytes //The serial port receives the data
SEND OK //sent successfully
CLOSED //TCP connection is closed
5.2.2 UDP Communication Test
One is in AP mode , the local port is 8001, and the other is Station mode. the
local port is 8002.
AP Configuration
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AT+CWMODE=2 //configured for AP mode
OK
AT+CWSAP_DEF="TCP_Server","12345678",5,4 //AP information
OK
AT+CIFSR //Query the local IP address
+CIFSR:APIP,"192.168.4.1"
+CIFSR:APMAC,"a2:20:a6:19:c7:0a"
OK
AT+CIPSTART="UDP","192.168.4.2",8002,8001,0 //Open UDP
connection
CONNECT
OK
+IPD,10:Ai-Thinker //received 10 data (Ai-Thinker)
AT+CIPSEND=10 //send 10 bytes of data to the server
OK
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>//After the emergence of the symbol serial port to send
Ai-Thinker (without carriage return line)
Recv 10 bytes //The serial port receives the data
SEND OK
AT+CIPCLOSE //close the UDP connection
CLOSED
OK
Station Configuration
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AT+CWMODE=2 //configured for station mode
OK
AT+CWSAP_DEF="TCP_Server","12345678",5,4 //Connect to AP
OK
AT+CIFSR //Query the local IP address
+CIFSR:STAIP,"192.168.4.2"
+CIFSR:STAMAC,"5c:cf:7f:91:8b:3b"
OK
AT+CIPSTART="UDP","192.168.4.1",8001,8002,0 //Open UDP connection
CONNECT
OK
AT+CIPSEND=10 //send 10 bytes of data to the server
OK
>//After the emergence of the symbol serial port to send
Ai-Thinker (without carriage return line)
Recv 10 bytes //The serial port receives the data
SEND OK
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+IPD,10:Ai-Thinker //received 10 data (Ai-Thinker)
AT+CIPCLOSE //close the UDP connection
CLOSED
OK
6 FAQ
6.1 Garbage Instructions When Power Is On
ESP8266 chip itself supports 26MHz and 40MHz crystal, if the use of 40MHz
crystal, the default baud rate of 115200, if the use of 26MHz crystal, the UART0
power after the baud rate = 26 * 115200/40 = 74880, the letter can be ESP8266
Series modules are used 26MHz, because the general serial port tool does not support
the baud rate, so there will be printed on the garbled.
You can use the security serial interface assistant to configure the baud rate
74880 to view the startup information.
Note: part of the USB to TTL does not support 74880 baud rate, the computer
comes with RS232 to TTL does not support 74880 baud rate, recommend the use of
FT232, CP2102, CH340 and other chips.
6.2 How To Shield The Power When The Garbled
U0TXD default power will be system printing, through the UART's internal pin
switching function, user_init () call system_uart_swap () function, the new U0TXD
change to GPIO15, U0RXD change to GPIO13, the hardware connection on the two
cited Feet can be serial communication.
Note: After the exchange, the download pin on the hardware is still the original
U0TXD and U0RXD.
6.3 Can’t Burn Normally
Refer to http://wiki.ai-thinker.com/esp_download to download, pay attention to
download before the module to ensure that the download mode.
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6.4 SDK Development Environment
Refer to http://wiki.ai-thinker.com/ai_ide_install to build the SDK development
environment.
6.5 Startup Information Description
Start, if the power and serial port connection is normal, then the baud rate 74880
to see the first sentence is as follows:
ets Jan 8 2013,rst cause:1, boot mode:(3,6)
The start and start modes of the module can be analyzed based on the print
information:
rst cause
1: Power restart
2: External reset
4: Hardware watchdog reset
boot mode
The second in parentheses has no practical meaning, the first can refer to the
following table to start the information analysis:
Table 6.1 Startup Mode Description
Value Mode GPIO0 GPIO2 GPIO15
0 - 0 0 0
1Download Mode 0 1 0
2 - 1 0 0
3 Run mode 1 1 0
4 - 0 0 1
5 - 0 1 1
6 - 1 0 1
7 - 1 1 1
7 Module Selection
model ESP-01 ESP-01S ESP-01M ESP-07 ESP-07S ESP-12F ESP-12S
Package DIP-8 DIP-8 SMD-18 SMD-16 SMD-16 SMD-22 SMD-16
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Size(mm) 24.7*14.4 24.7*14.4 18*18 21.2*16.0 17.0*16.0 24.0*16.0 24.0*16.0
layer 2 2 4 2 4 4 4
Flash size 8Mbit 8Mbit 8Mbit 8Mbit 32Mbit 32Mbit 32Mbit
Certificati
on ----FCC/CE FCC/CE FCC/CE
Antenna PCB PCB PCB Ceramic
IPEX IPEX PCB PCB
Indicator
light
TXD0
POWER GPIO2 GPIO2
POWER -GPIO2 GPIO2 GPIO2
Available
IO 2 2 11 9 9 9 9
For more selection information please see http://wiki.ai-thinker.com/esp8266 or
contact us.
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8 Contact US
Official website: https://www.ai-thinker.com
Develop Wiki: http://wiki.ai-thinker.com
Official forum: http://bbs.ai-thinker.com
Sample purchase: https://anxinke.taobao.com
Business cooperation: sales@aithinker.com
Technical support: support@aithinker.com
Telephone: 400-855-5368
Company Address: 6/F, Block C2, Huafeng Industrial Park, Hangcheng Road,
Bao'an Road, Baoan District, Shenzhen ,China
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