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AIROC™ Bluetooth® LE module
Pin assignments
Table 6
CYW20822-P4XXI040 module pin description
Pin Number
Name
1
GND
2
WURX
3
VBATT
4
P11
5
P10
6
P9
7
PWD
8
SWD_CLK
9
SWD_IO
10
GND
11
VDDIO
12
VDDIOP
13
VAUX
14
XTALO_32k
15
XTALI_32k
16
P13
17
P20
18
GND
19
P22
20
P23
21
P24
22
P25
23
P30
24
P32
25
P33
26
GND
27
NC (RFIO)
Preliminary Datasheet
Type
Description
PWR
Ground reference
RF
Wakeup receiver RF input
PWR
Battery supply
I/O
Programmable Digital I/O
ADC Input
The default definition is UART0_CTS.
I/O
Programmable Digital I/O
ADC Input
The default definition is SPIO_CS.
I/O
Programmable Digital I/O
ADC Input
The default definition is I2C0_SCK.
I/O
Power Down Input (Active High)
Must connect to a 1 MΩ pull-down resistor.
I/O
Serial wire debug clock
I/O
Serial wire debug data
PWR
Ground reference
PWR
Digital I/O power supply input
PWR
1.8 V I/O power supply output generated by switcher, connected to VAUX if
unused
PWR
Reserved for switching regulator internal use
A
32.768 kHz crystal oscillator output
A
32.768 kHz crystal oscillator input
I/O
Programmable Digital I/O
The default definition is SPI0_MISO.
I/O
Programmable Digital I/O
The default definition is SPIO_CLK.
PWR
Ground reference
I/O
Programmable Digital I/O
The default definition is SPIO_MOSI.
I/O
Programmable Digital I/O
The default definition is UART0_TX.
I/O
Programmable Digital I/O
The default definition is UART0_RTS.
I/O
Programmable Digital I/O
The default definition is UART0_RX.
I/O
Programmable Digital I/O
The default definition is I2C0_SDA.
I/O
Programmable Digital I/O
BBoot , must connect to a 1 MΩ pull-down resistor.
I/O
Programmable Digital I/O
The default definition is UART1_TX, to provide SW debug message output
PWR
Ground reference
NC
No connection
Reserved for 2.4 GHz Single-ended RF I/O for Bluetooth radio external antenna
connection (50 Ω).
15
002-38449 Rev. **
2023-08-21
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