Copyright © Bridgetek Pte Ltd

14

MM930Lite Datasheet

Version 1.0

Document Reference No.: BRT_000085

Clearance No.: BRT#069

4.7

External I/O Bus

There are 23 multiple function GPIOs provided on CN1 2x20 pins, 2.54mm pitch female header. External

feature boards may connect via UART, PWM, ADC, DAC, SPI and I2C on these IO connectors.

Table 4-5 lists all features assigned for each pin.

4.7.1 CN1 – 40-pin Dual Entry Header, Multiple function GPIO & Control

Signals

Pin No.

Function 1

Function 2

Function 3

Function 4

1,3,5,15,24

GND

-

-

-

2

FT800_AUDL

-

-

-

4

GPIO23

UART0_TXD

PWM2

-

6

GPIO22

UART0_RXD

PWM3

-

7

DAC1

-

-

-

8

GPIO24

UART0_RTS

PWM1

-

9

DAC0

-

-

-

10

GPIO25

UART0_CTS

PWM0

-

11,25,26

-

-

-

-

12

GPIO9

PWM2

-

-

13

GPIO11

PWM0

-

-

14

GPIO10

PWM1

-

-

16

VDD_5V

-

-

-

17

GPIO33

SPIM_SSn3

-

-

18

GPIO34

SPIM_SCK

SPIS_SCK

-

19

GPIO35

SPIM_MISO

SPIS_MISO

-

20

GPIO36

SPIM_MOSI

SPIS_MOSI

-

21

GPIO38

SPIM_IO3

RTC_REF

-

22

GPIO37

SPIM_IO2

SPIS_SS

-

23

VCCIO_3V3

-

-

-

27

GPIO20

UART3_RTS

-

-

28

GPIO21

UART3_CTS

-

-

29

GPIO18

UART3_RXD

-

-

30

GPIO19

UART3_TXD

-

-

31

GPIO29

UART0_RI

UART1_CTS

-

32

GPIO28

UART0_DCD

UART1_RTS

-

33

GPIO27

UART0_DSR

UART1_TXD

-

34

GPIO26

UART0_DTR

UART1_RXD

-

35

ADC2

-

-

-

36

ADC1

-

-

-