Ai Thinker Technology ESP01E WiFi module User Manual

ESP-01/07/12 Series Modules User's Manual

OEM/Integrators Installation Manual

Version 1.4

Ai-Thinker Inc

Copyright

(c)

2017

ESP-01/07/12 Series Modules User's Manual V1.4

Revision Record

Date

Version

Author

Release Notes

2017.07.01

V1.0

Wang Chong

First Version

2017.09.04

V1.1

Wang Chong

Add ESP-01M, Delete ESP-12E

2017.12.18

V1.2

Fang Dongbin

Modify the GPIO4 pin description, change

the contact number

2018.3.10

V1.3

Lv Junxiong

Add ESP-01F

2018.8.16

V1.4

Lv Junxiong

Add ESP-01E

ESP-01/07/12 Series Modules User's Manual V1.4

FCC STATEMENT

Changes or modifications not expressly approved by the party responsible for compliance

could void the user’s authority to operate the equipment.

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, and

(2) this device must accept any interference received, including interference that may cause

undesired operation.

Note: 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 or more 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.

Please notice that if the FCC identification number is not visible when the module is

installed inside another device, then the outside of the device into which the module is installed

must also display a label referring to the enclosed module. This exterior label can use wording

such as the following: “Contains FCC ID:2AHMR-ESP01M” or “Contains FCC

ID:2AHMR-ESP07S”or “Contains FCC ID:2AHMR-ESP12S” or “Contains FCC

ID:2AHMR-ESP12F” or “Contains FCC ID:2AHMR-ESP01E”or “Contains FCC

ID:2AHMR-ESP01F”any similar wording that expresses the same meaning may be used.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled

environment. This equipment 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.

The module is limited to OEM installation ONLY.

The OEM integrator is responsible for ensuring that the end-user has no manual instruction t

o 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 con

figurations with respect to Part 2.1093 and difference antenna configurations.

There is requirement that the grantee provide guidance to the host manufacturer for complia

nce with Part 15B requirements.

ESP-01/07/12 Series Modules User's Manual V1.4

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 ......................................................................................... 6!

2.2 Boot Mode .............................................................................................. 7!

3 Electrical Characteristics ................................................................................... 8!

3.1 Maximum Ratings .................................................................................. 8!

3.2 Suggested Working Environment ........................................................... 8!

3.3 Digital Port Features ............................................................................... 8!

3.4 Power Consumption ............................................................................... 8!

3.5 Transmit Power ..................................................................................... 10!

3.6 Receive Sensitivity ............................................................................... 10!

4 Hardware Guidance ......................................................................................... 11!

4.1 Typical Applications ............................................................................. 11!

4.2 PCB Antenna Display Instructions ....................................................... 13!

4.3 Module Peripheral Routing Instructions ............................................... 14!

4.4 GPIO Level Conversion ....................................................................... 15!

4.5 Power Supply Reference Design .......................................................... 15!

4.6 ADC Supply Reference Design ............................................................ 15!

4.7 Automatically Download Reference Design ........................................ 16!

4.8 Reflow oven temperature curve ............................................................ 16!

5 Usage Guide .................................................................................................... 17!

5.1 Introduction To The Basic AT Command ............................................ 17!

5.1.1 AT .............................................................................................. 17!

5.1.2 AT+GMR .................................................................................. 17!

5.1.3 AT+RST .................................................................................... 17!

ESP-01/07/12 Series Modules User's Manual V1.4

5.1.4 AT+RESTORE .......................................................................... 18!

5.2 Use Examples ....................................................................................... 18!

5.2.1 TCP Communication Test ......................................................... 18!

5.2.2 UDP Communication Test ......................................................... 20!

6 FAQ ................................................................................................................. 22!

6.1 Garbage Instructions When Power Is On ............................................. 22!

6.2 How To Shield The Power When The Garbled .................................... 22!

6.3 Can’t Burn Normally ......................................................................... 22!

6.4 SDK Development Environment .......................................................... 23!

6.5 Startup Information Description ........................................................... 23!

7 Module Selection ............................................................................................. 23!

8 Contact US ....................................................................................................... 25!

ESP-01/07/12 Series Modules User's Manual V1.4

Page 1 of 23

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-in 10 bit high precision ADC

! 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 beacon

ESP-01/07/12 Series Modules User's Manual V1.4

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2 Module Interface

2.1 Package Size

Figure 2.1 ESP-01/ESP-01S pin dimensions

Figure 2.2 ESP-01M pin dimensions

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Figure 2.3 ESP-01F pin dimensions

Figure 2.4 ESP-07 pin dimensions

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Figure 2.5 ESP-07S pin dimensions

Figure 2.6 ESP-12F pin dimensions

ESP-01/07/12 Series Modules User's Manual V1.4

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Figure 2.7 ESP-12S pin dimensions

Figure 2.7 ESP-01E pin dimensions

ESP-01/07/12 Series Modules User's Manual V1.4

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Table 2.1 ESP series module size table

Model

Length

(mm)

Width

(mm)

Height

(mm

PAD size

(mm)

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

2.8±0.2

-

1.6

2.0

0.8±0.1

ESP-01F

11

10

2.0±0.2

1.1

1.2

0.8±0.1

ESP-07

21.2

16.0

3.0±0.2

-

2.0

0.8±0.1

ESP-07S

17.0

16.0

3.0±0.3

1 x 1.2

2.0

0.8±0.1

ESP-12F

24.0

16.0

3.0±0.2

2.0

0.8±0.1

ESP-12S

24.0

16.0

3.0±0.2

1 x 1.2

2.0

0.8±0.1

2.1 Pin Definition

Table 2.2 ESP Series Module Pin Function Definitions

Pin Number

Nam

e

Remarks

01

01S

01M

01E

01F

07

07S

12S

12F

7

18

16

1

RST

Reset Pin, Active Low

-

16

3

2

ADC

AD conversiont, Input voltage

range 0~1V, the value range is

0~1024.

6

9

4

3

EN

Chip Enabled Pin, Active High

-

17

5

4

IO16

Connect with RST pin to wake

up Deep Sleep

-

15

6

5

IO14

HSPI_CLK，IR_T，I2C_SCL

，I2SI_WS

-

14

7

6

IO12

HSPI_MISO

-

5

8

7

IO13

HSPI_MOSI; UART0_CTS

8

2

17

8

VCC

Module power supply pin, the

voltage range of 3.0 ~ 3.6V

-

9

CS0

Flash chip select signal

-

10

MIS

O

Slave Output Master Input

-

11

-

11

IO9

Gpio9，Only ESP-01M/01E Can

ESP-01/07/12 Series Modules User's Manual V1.4

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-

12

-

12

IO10

Gpio10,Only ESP-01M/01E Can

-

13

MOS

I

Master Output Slave Input

-

14

SCL

K

Clock

1

2/18

9

15

GND

-

6

9

10

16

IO15

HSPI_CS，U0_RTS，

I2SO_BCK

2

7

10

11

17

IO2

U1_TXD，I2C_SDA，I2SO_WS

3

8

11

12

18

IO0

GPIO0，HSPI_MISO，

I2SI_DATA

-

10

12

13

19

IO4

GPIO4

-

13

14

20

IO5

IR_R

4

14

15

21

RXD

GPIO3，I2SO_DATA

5

3

15

16

22

TXD

GPIO1

-

1

-

ANT，Only ESP-01F/01E Can

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

low

high

Running

mode

high

low

high

Chip Test

mode

high

-

low

ESP-01/07/12 Series Modules User's Manual V1.4

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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

x

Unit

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-Sleep①

20

mA

Light-Sleep②

2

mA

Deep-Sleep③

20

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 ②: 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.

ESP-01/07/12 Series Modules User's Manual V1.4

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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

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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

Figure 4.2 Typical application of ESP-01S

Figure 4.3 Typical application of ESP-01M

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Figure 4.4 Typical application of ESP-01F

Figure 4.5 Typical application of ESP-07

Figure 4.6 Typical application of ESP-07S

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Figure 4.7 Typical application of ESP-12E/ESP-12F

Figure 4.8 Typical application of ESP-12S

Figure 4.9 Typical application of ESP-01E

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

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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

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.

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4.4 GPIO Level Conversion

Figure 4.8 Transistor level conversion

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)

Ai-Thinker Technology Co. Ltd.

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：

Ai-Thinker Technology Co. Ltd.

ready

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：

Ai-Thinker Technology Co. Ltd.

ready

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：

Ai-Thinker Technology Co. Ltd.

ready

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：

Ai-Thinker Technology Co. Ltd.

ready

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

1

Download Mode

0

1

0

2

-

1

0

3

Run mode

1

0

4

-

0

1

5

-

0

1

6

-

1

0

1

7

-

1

7 Module Selection

model

ESP-01

ESP-01S

ESP-01M

ESP-07

ESP-07S

ESP-12F

ESP-12S

Package

DIP-8

SMD-18

SMD-16

SMD-22

SMD-16

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Size(mm)

24.7*14.4

18*18

21.2*16.0

17.0*16.0

24.0*16.0

layer

2

4

2

4

Flash size

8Mbit

32Mbit

Certificati

on

-

FCC/CE

Antenna

PCB

Ceramic

IPEX

PCB

Indicator

light

TXD0

POWER

GPIO2

POWER

-

GPIO2

Available

IO

2

11

9

For more selection information please see http://wiki.ai-thinker.com/esp8266 or

contact us.

ESP-01/07/12 Series Modules User's Manual V1.4

Page 25 of

23

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: 0755-29162996

Company Address: 6/F, Block C2, Huafeng Industrial Park, Hangcheng Road,

Bao'an Road, Baoan District, Shenzhen ,China

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Ai Thinker Technology ESP01E WiFi module User Manual

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User Manual

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