User's Manual

31 May 2022
4 of 14
RED4S User’s Manuals
12
P17
Quasi-bi directional I/O port or External Interrupt 5
13
P12_SCL
Quasi-bi directional I/O port I2C Clock
The pull-up resistor is always switched on.
Reserved Address : 0x70, 0x71
14
P11_SDA
Quasi-bidirectional I/O port I2C Data In / Out
The pull-up resistor is always switched on.
Reserved Address : 0x70, 0x71
15
GND
Ground
16
GND
Ground
17
GND
Ground
18
RF IO
Rx Input / Tx Output
19
GND
Ground
20
VCC36P
DC Power for Power Amp
21
VCC36P
DC Power for Power Amp
22
GND
Ground
23
GND
Ground
24
GND
Ground
25
GND
Ground
26
GND
Ground
27
GND
Ground
28
SWDIO
Serial Wire Debug data in out
29
SWCLK
Serial Wire Debug Clock
30
RESETb
Reader SOC Reset signal 0: reset
31
NC
Not Connection
32
NC
Not Connection
33
NC
Not Connection
34
P01_TXD0
Quasi-bi directional I/O port or UART0 Output
35
P00_RXD0
Quasi-bi directional I/O port or UART0 Input