Users Manual
Table Of Contents
DOITING
®
ESP-M1/M2 User Mannual
Doctors of Intelligence & Technology (www.doiting.com) Copyright@2014-2019
Page 4
Table 2.2 Pin Function Definition
Num
Pin Name
Type
Function
1
ADC
I
A/D pin. Voltage Range: 0-1V. 10bit resolution
2
EN
I
Effective: High level. Used to enable the module
3
IO14
I/O
GPIO14;HSPI_CLK
4
IO12
I/O
GPIO12;HSPI_MISO
5
IO13
I/O
GPIO13;
HSPI_MOSI; U
A
R
T0
_C
TS
6
IO15
I/O
GPIO15; MTDO;HSPICS;
U
ART0_RT
S;
Internal Pull-down
7
VCC
P
POWER：3.3V
8
GND
P
GND
9
IO2
I/O
GPIO2;
U
ART1
_T
XD;
10
IO0
I/O
GPIO0; SPI_CS2;
11
IO4
I/O
GPIO4
12
IO5
I/O
GPIO5
13
RXD
I/O
GPIO3; UART Rxd
14
TXD
I/O
GPIO1;
UART Txd
15
RST
I
Effective: Low level. Used to reset the module. Internal Pull-up.
16
GND
P
GND