Ai Thinker Technology ESP 12L Datasheet

ESP-12L WIFI MODULE V1

ESP-12L Datasheet

Version V1

ESP-12L WIFI MODULE V1

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Disclaimer and Copyright Notice

Information in this document, including URL references, is subject to change

without notice.

THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES

WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY,

NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR

ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL,

SPECIFICATION OR SAMPLE.

All liability, including liability for infringement of any proprietary rights, relating

to use of information in this document is disclaimed. No licenses express or implied,

by estoppel or otherwise, to any intellectual property rights are granted herein.

The test data obtained in this paper are all tested by Ai-Thinker lab, and the

actual results may be slightly different.

The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The

Bluetooth logo is a registered trademark of Bluetooth SIG.

All trade names, trademarks and registered trademarks mentioned in this document

are property of their respective owners, and are hereby acknowledged.

The final interpretation is owned by Shenzhen Ai-Thinker Technology Co., Ltd.

ESP-12L WIFI MODULE V1

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1. Product overview

The ESP-12L WiFi module was developed by Ai-Thinker Technology. The core processor ESP8266 integrates the industry-leading Tensilica L106 ultra-low-power 32-bit micro MCU in a small package with 16-bit Lite mode, clocked at Supports 80 MHz and 160 MHz, supports

RTOS, and integrates Wi-Fi MAC/BB/RF/PA/LNA.

The ESP-12L WiFi module supports the standard IEEE802.11 b/g/n protocol, a complete TCP/IP protocol stack. Users can use this module to add networking capabilities to existing

devices or to build separate network controllers.

The ESP8266 is a high-performance wireless SOC that offers maximum utility at the lowest

cost and unlimited possibilities for embedding WiFi functionality into other systems.

The ESP8266 is a complete and self-contained WiFi network solution that can operate independently or as a slave running on other host MCUs. The ESP8266 is capable of booting directly from an external flash memory when it is powered by an application and is the only application processor in the device. The built-in cache helps improve system performance and

reduce memory requirements.

In another case, the ESP8266 is responsible for wireless Internet access. When it comes to the task of the WiFi adapter, it can be added to any micro controller-based design. The connection

is simple and easy, just by SPI / SDIO interface or I2C / UART port. Just fine.

The ESP8266's powerful on-chip processing and storage capabilities allow it to integrate sensors and other application-specific devices through the GPIO port, minimizing system resources during minimal up-front development and operation.

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Features

◼ The smallest 802.11b/g/n Wi-Fi SOC module

◼ Low power 32-bit CPU, can also serve as the application processor

◼ Up to 160MHz clock speed

◼ Built-in 10 bit high precision ADC

◼ Supports UART/GPIO/IIC/PWM/ADC

◼ SMD-16 package for easy welding

◼ Integrated Wi-Fi MAC/BB/RF/PA/LNA

◼ Support multiple sleep patterns. Deep sleep current as low as 20uA

◼ UART baud rate up to 4Mbps

◼ Embedded LWIP protocol stack

◼ Supports STA/AP/STA + AP operation mode

◼ Support Smart Config/AirKiss technology

◼ Supports remote firmware upgrade (FOTA)

◼ General AT commands can be used quickly

◼ Support for the two development, integration of windows, Linux development

environment

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Product Specification

Module Model

ESP-12L

Package

SMD16

Size

24*16*3(±0.2)mm

Certification

FCC/CE

SPI Flash

Default 32Mbit

Interface

UART/GPIO/ADC/PWM

IO Port

9

UART Baud rate

Support 300 ~ 4608000 bps ，Default 115200 bps

Frequency Range

Antenna

PCB Antenna

Transmit Power

Receiving Sensitivity

CCK, 1 Mbps : -90dBm CCK, 11 Mbps: -85dBm 6 Mbps (1/2 BPSK): -88dBm 54 Mbps (3/4 64-QAM): -70dBm HT20, MCS7 (65 Mbps, 72.2 Mbps): -67dBm

Power (Typical Values)

Continuous Transmission=>Average：~71mA，Peak： 500mA

Modem Sleep: ~20mA Light Sleep: ~2mA Deep Sleep: ~0.02mA

Security

WEP/WPA-PSK/WPA2-PSK

Power Supply

Voltage 3.0V ~ 3.6V，Typical 3.3V，Current >500mA

Operating

Temperature

-20 ℃ ~ 85 ℃ Storage Environment

-40 ℃ ~ 85 ℃ , < 90%RH

Table1.1 Product Specification Description

ESP-12L WIFI MODULE V1

2412 ~ 2462MHz

802.11b: 12.4 dBm (@11Mbps)

802.11g: 11.9 dBm (@54Mbps)

802.11n: 12 dBm (@HT20, MCS7)

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Table 2.2 Pin function description

No.

Pin Name

Functional Description

1

RST

Reset Pin, Active Low

2

ADC

AD conversion, Input voltage range 0~1V, the value range

is 0~1024.

3

EN

Chip Enabled Pin, Active High

4

IO16

Connect with RST pin to wake up Deep Sleep

5

IO14

GPIO14; HSPI_CLK

6

IO12

GPIO12; HSPI_MISO

7

IO13

GPIO13; HSPI_MOSI; UART0_CTS

8

VCC

Module power supply pin, Voltage 3.0V ~ 3.6V

ESP-12L WIFI MODULE V1

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9

GND

10

IO15

GPIO15; MTDO; HSPICS; UART0_RTS

11

IO2

GPIO2; UART1_TXD

12

IO0

GPIO0;HSPI_MISO;I2SI_DATA

13

IO4

GPIO4

14

IO5

GPIO5;IR_R

15

RXD

UART0_RXD; GPIO3

16

TXD

UART0_TXD; GPIO1

Mode

CH_PD(EN)

RST

GPIO15

GPIO0

GPIO2

TXD0

Download

mode

high

low

high

Running

mode

high

low

high

Table 2.3 Description of the ESP series module boot mode

Notes: Some of the pins inside the module have been pulled or pulled down, please

refer to the schematic diagram.

3. Electrical Characteristics

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Electrical Characteristics

Description

Min

Typ

Max

Unit

Input frequency

2400

-

2483.5

MHz

Input reflection

-

-10

dB

Output Power

PA output power at 72.2 Mbps

15.5

16.5

17.5

dBm

PA output power in 11b mode

19.5

20.5

21.5

dBm

Sensitivity

CCK, 1 Mbps

-90

dBm

CCK, 11 Mbps

-85

dBm

6 Mbps (1/2 BPSK)

-88

dBm

Parameter

Symbol

Min

Typ

Max

Unit

Storage

temperature

-

-40

Normal

85

℃

Operating

temperature

-

-20

20

85

℃

Maximum

soldering

temperature

IPC/JEDEC

J-STD-020

-

260

℃

Supply voltage

VDD

2.7

3.3

3.6

V

I/O

VIL/V

IH

-

-0.3/0.75VIO

-

0.25VIO/3.6

V

VOL/V

OH

-

N/0.8VIO

-

0.1VIO/N

V

I

MAX

- - -

12

V

ESP-12L WIFI MODULE V1

Wi-Fi Radio

ESP-12L WIFI MODULE V1

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54 Mbps (3/4 64-QAM)

-70

dBm

HT20, MCS7 (65Mbps,72.2 Mbps)

-67

dBm

Adjacent channel rejection

OFDM, 6 Mbps

37

dB

OFDM, 54 Mbps

21

dB

HT20, MCS0

37

dB

HT20, MCS7

20

dB

Modes

Min

Typ

Max

Unit

Tx 802.11b, CCK 11Mbps,

POUT=+17dBm

-

170 - mA

Tx 802.11g, OFDM 54Mbps,

POUT =+15dBm

-

140 - mA

Tx 802.11n, MCS7, POUT =+13dBm

-

120 - mA

Rx 802.11b, 1024 bytes packet length ,

-80 dBm

-

50 - mA

Power Consumption

The following power consumption data were obtained from the tests with a 3.3V power

supply and a voltage stabilizer, in 25°C ambient temperature. All data are based on 50% duty

cycle in continuous transmission mode.。

ESP-12L WIFI MODULE V1

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Rx 802.11g, 1024 bytes packet length ,

-70 dBm

-

56 - mA

Rx 802.11n, 1024 bytes packet length ,

-65 dBm

-

56 - mA

Modem-sleep①

-

20 - mA

Light-sleep②

- 2 -

mA

Deep-sleep③

-

20 - uA

Power Off

-

0.5 - uA

Notes:

◼ Modem-sleep is used when such applications as PWM or I2S require the CPU to be working.

In cases where Wi-Fi connectivity is maintained and data transmission is not required, the

Wi-Fi Modem circuit can be shut down to save power, according to 802.11 standards (such

as U-APSD). For example, in DTIM3,when ESP8266EX sleeps for 300 ms and wakes up

for 3 ms to receive Beacon packages from AP, the overall average current consumption is

about 20 mA.

◼ Light-sleep is used for applications whose CPU may be suspended, such as Wi-Fi switch.

In cases where Wi-Fi connectivity is maintained and data transmission is not required, Wi-

Fi Modem circuit and CPU can be shut down to save power, according to 802.11 standards

(such as U-APSD). For example, in DTIM3, when ESP8266EX sleeps for 300 ms and wakes

up for 3 ms to receive Beacon packages from AP, the overall average current consumption

is about 2 mA.

◼ Deep-sleep is for applications that do not require Wi-Fi connectivity and only transmit data

over long time lags, e.g., a temperature sensor that measures temperature every 100s. For

example, when ESP8266EX sleeps for 300s then wakes up to connect to AP (taking about

0.3 ~ 1s), the overall average current consumption is far less than 1 mA. The current

consumption of 20 μA was obtained at the voltage of 2.5V.

ESP-12L WIFI MODULE V1

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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

Official forum：https://anxinke.taobao.com

Business cooperation：sales@aithinker.com

Technical support：support@aithinker.com

Telephone：0755-29162996

Company Address：7/F, Fengze Building B, Huafeng Industrial Park 2th, Hangkong street,

Xixiang Raod, Baoan, Shenzhen China.

FCC WARNING 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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with

minimum distance between 20cm the radiator your body: Use only the supplied antenna.

ATTENTION

a.OEM integrator is responsible for ensuring that the end-user has no manual instructions to remove or install module. b.The module is limited to installation in mobile or fixed applications, according to Part 2.1091(b) c.Separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and different antenna configurations

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, and

2) This device and its antenna(s) must not be co‐located with any other transmitters except in accordance with FCC multi‐transmitter product procedures. Referring to the multi‐transmitter policy, multipletransmitter(

s) and module(s) can be operated simultaneously without C2P.

3) For all products market in US, OEM has to limit the operation channels in CH1 to CH11 for 2.4G band by supplied firmware programming tool. OEM shall not supply any tool or info to the end‐user regarding to Regulatory Domain change. USERS MANUAL OF THE END PRODUCT: In the users manual of the end product, the end user has to be informed to keep at least 20cm separation with the antenna while this end product is installed and operated. The end user has to be informed that the FCC radio‐frequency exposure guidelines for an uncontrolled environment can be satisfied. The end user has to also be informed that any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment. If the size of the end product is smaller than 8x10cm, then additional FCC part 15.19 statement is required to be available in the users manual: This device complies with Part 15 of 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. LABEL OF THE END PRODUCT: The final end product must be labeled in a visible area with the following " Contains FCC ID: 2ARI3-BW1X. If the size of the end product is larger than 8x10cm, then the following FCC part 15.19 statement has to also be available on the label: This device complies with Part 15 of 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.

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