User's Guide

Rabbit-C User Guide
www.pairlink.com.cn
All rights reserved Suzhou Pairlink Network Technology Ltd.
- 6 -
3.Hardware Design and PCB layout
3.1.Pin assignment and Pin description
Rabbit-C Pin definition can refer to Figure 1.
Table 1: Module Pin Description
Pin Number
Pin Name
I/O
Alternate Function Description
11
VBAT
P
Power Supply(DC1.8V~3.6V).
1,17,24,27
GND
P
Connect to Ground.
12
RESET
DI
Reset signal (active high).
13
LOG_OUT
DIO
Log_out,not intended for customer use.
20
P3_1
DIO
GPIO/UART_RX
21
P3_0
DIO
GPIO/UART_TX
25
32K_XI
A
26
32K_XO
A
2
P0_0
DIO
INPUT/OUTPUT with selectable pull up/down resistor.
General purpose I/O port bit or alternate function
nodes. Contain state retention mechanism during
power down.
3
P0_4
DIO
4
P0_2
DIO
5
P0_1
DIO
6
P4_0
DIO
7
P4_1
DIO
8
P4_2
DIO
9
P4_3
DIO
10
P0_6
DIO
14
P5_0
DIO
15
P1_0
DIO
16
P1_1
DIO
18
P3_2
DIO
19
P2_3
DIO/AIN
GPIO/ADCIN3
22
P2_4
DIO/AIN
GPIO/ADCIN4
23
P2_5
DIO/AIN
GPIO/ADCIN5