User's Manual

WR3E User Manual
2. Dimensions and Footprint
2.1Dimensions
WR3E has 2 columns of Pins (2*8).The distance between each Pin is 2 mm.
Size of WR3E: 16 mm (W)×24 mm (L) ×3.3 mm (H)
2.2 Pin Definition
Table 1 shows the generalpin attributes of WR3E
Table 1. The typical pin definitionof WR3E
PIN
NO.
NAME TYPE DISCREPTION
1
NC
/ Dangling don't pick up, in order to compatible with other
modules
2 ADC AI
ADC，Max5V
3 CHIP_EN I/O
4 GPIOA_29 I/O UART_Log_RXD GPIO
5 GPIOA_14 I/O
GPIOA_14，hardware PWM
6 GPIOA_15 I/O
GPIOA_15，hardware PWM
7
GPIOA_22
I/O GPIOA_22
8 VCC P
（3.3V）
9 GND P
10 GPIOA_0 I/O
GPIOA_0，HardwarePWM
11 GPIOA_30 I/O UART_Log_TXD GPIO
12 GPIOA_19 I/O GPIOA_19
13 GPIOA_5 I/O
GPIOA_5，hardware PWM
14 GPIOA_12 I/O
GPIOA_12，hardware PWM
15 RXD I/O UART0_RXD
16 TXD I/O UART0_TXD
Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input.