User's Guide

RN2903
DS00000A-page 4 Advance Information  2015 Microchip Technology Inc.
Table 1-1 describes the module’s pins.
TABLE 1-1: PIN DESCRIPTION
Pin Name Type Description
1 GND Power Ground supply terminal
2 UART_RTS Output Communication UART RTS signal
(1)
3 UART_CTS Input Communication UART CTS signal
(1)
4 RESERVED — Do not connect
5 RESERVED — Do not connect
6 UART_TX Output Communication UART Transmit (TX)
7 UART_RX Input Communication UART Receive (RX)
8 GND Power Ground supply terminal
9 GPIO13 Input/Output General purpose I/O pin
10 GPIO12 Input/Output General purpose I/O pin
11 GND Power Ground supply terminal
12 VDD Power Positive supply terminal
13 GPIO11 Input/Output General purpose I/O pin
14 GPIO10 Input/Output General purpose I/O pin
15 NC — Not connected
16 NC — Not connected
17 NC — Not connected
18 NC — Not connected
19 NC — Not connected
20 GND Power Ground supply terminal
21 GND Power Ground supply terminal
22 GND Power Ground supply terminal
23 RF RF analog RF signal pin
24 GND Power Ground supply terminal
25 NC — Not connected
26 GND Power Ground supply terminal
27 GND Power Ground supply terminal
28 GND Power Ground supply terminal
29 NC — Not connected
30 TEST0 — Do not connect
31 TEST1 — Do not connect
32 RESET
Input Active-low device Reset input
33 GND Power Ground supply terminal
34 VDD Power Positive supply terminal
35 GPIO0 Input/Output General purpose I/O pin
36 GPIO1 Input/Output General purpose I/O pin
37 GPIO2 Input/Output General purpose I/O pin
38 GPIO3 Input/Output General purpose I/O pin
39 GPIO4 Input/Output General purpose I/O pin
40 GPIO5 Input/Output General purpose I/O pin
41 GND Power Ground supply terminal
42 NC — Not connected
43 GPIO6 Input/Output General purpose I/O pin