BK3231S datasheet(15/24 Pages) ETC2

Part #	BK3231S

Description	Bluetooth SoC

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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15 / 24 page

BK3231S Datasheet

V1.5

Proprietary and Confidential

Page 15 of 24

12

P03

General I/O, or 3DS_PWM[3],

I2C1.SDA, WP_FLA

13

P02

General I/O, or 3DS_PWM[2], I2C1.SCL, HOLD_FLA

14

P07

General I/O, or SPI_NSS, CSN_FLA

15

P06

General I/O,or MISO for SPI,

SCK_FLA

16

P04

General I/O, or SPI_SCK, SI_FLA

17

P14

General I/O

，or enable for PWM4

18

P30

General I/O

，or input of ADC0

19

P01

General I/O, or 3DS_PWM[1]

20

P00

General I/O, or 3DS_PWM[0]

21

TSTEN

Enable the testting function of memory

22

VCCRF

3V power supply

23

ANT

The input of RF

24

VDDPA15

The output of PA ldo

25

VCCIF

3V power supply

26

ADCVREF

The output of reference voltage of ADC.

It can be connected to a cap on the board

27

P21

General I/O, or UART RX

28

VCCXTAL

3V power supply

29

XTALI

The input of 16M crystal oscillator

30

XTALO

The input of 16M crystal oscillator

31

P05

General I/O, or MOSI for SPI, SO_FLA

32

XTAL32K

The input of 32K crystal oscillator

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