User's Manual

WR2E User Manual

2. Dimensions and Footprint

2.1Dimensions

WR2E has 2 columns of Pins (2*9).The distance between each Pin is 2 mm.

Size of WR2E: 15 mm (W)×18 mm (L) ×3.3 mm (H)

2.2 Pin Definition

Table 1 shows the general pin attributes of WR2E

Table 1. The typical pin definition of WR2E

PIN

NO.

NAME TYP

E

DISCREPTION

1

VD33 P 3.3V

2 GPIOA_1

I/O

GPIOA_12，general GPIO，hardware PWM

3 GND P Power supply

4 GPIOA_1

I/O

GPIOA_19，general GPIO

5 GPIOA_1

I/O UART0_RXD

6 GPIOA_5 I/O

GPIOA_5，general GPIO，hardware PWM

7

GPIOA_2

I/O UART0_TXD

8 ADC AI

ADC port，Max5V

9 GPIOA_1

I/O

GPIOA_14 ，General GPIO，hardware PWM

10 CHIP_EN I/O External can make reset pin (effective) low level

11 GPIOA_1

I/O

GPIOA_15，General GPIO，hardware PWM

Note: P: Po

wer supply pins; I/O: Digital input or output pins; AI: Analog input.