SPBT2632C2A

Hardware specifications

Doc ID 022833 Rev 4

13/27

5.7

Pin assignment

Table 7.

Pin assignment

Name

Type

Pin#

Description

1.

Please note that the usage of ALT function is dependant upon the firmware that is loaded into the module,

and is beyond the scope of this document. The AT command interface uses the main UART by default.

5 V

tolerant

UART interface

RXD

I

13

Receive data

ADC 3

Y

TXD

O

14

Transmit data

ADC 2

Y

RTS

O

12

Request to send (active low)

Rx

Y

CTS

I

11

Clear to send (active low)

Tx

Y

Boot loader

Boot 0

I

9

Boot 0

Power and ground

Vin

8

GND

7

GND

Reset

RESETN

I

10

Reset input (active low for 5 ms)

2.5 V

max.

LPO

LPO

I

15

LPO input

GPIO - general purpose input/output

GPIO [1]

I/O

1

General purpose input/output

SPI MISO

Y

GPIO [2]

I/O

2

General purpose input/output

SPI MOSI/I2S_SD

Y

GPIO [3]

I/O

3

General purpose input/output

SPI SCLK/I2S_CK

Y

GPIO [4]

I/O

4

General purpose input/output

SPI SS/I2S_WS

Y

GPIO [5]

I/O

5

General purpose input/output

Y

GPIO [6]

I/O

6

General purpose input/output

DAC

Y

GPIO [7]

I/O

16

General purpose input/output

ADC 4

Y