TC35679FSG-002

2018-01-17

9

2.3. GPIO function list

GPIO pins can be assigned to UART I/Fs, serial memory I/Fs and etc. by TC35679 firmware or command from the external Host. Table

2-2 shows available functions for each GPIO pin, and Table 2-3 examples of GPIO function settings. About what function name shown

in Table 2-2 is assigned to a plurality of pins in the same, please note that it cannot be assigned to select a plurality of pins at the same

time.

Table 2-2 Available functions for GPIO

Pin name

Function 1

Function 2

Function 3

Function 4

Analog input

The pins of

Unused

GPIO0

WakeUp0 Input

—

—

—

—

Open

GPIO1

PWM0 Output

—

—

—

—

Open (Note)

GPIO2

PWM1 Output

—

—

—

—

Open

GPIO3

PWM2 Output

SPI-DOUT Output

—

—

ADC1 Input

Open

GPIO4

PWM3 Output

SPI-DIN Input

—

—

ADC2 Input

Open

GPIO5

UART1-TX Output

SPI-DOUT Output

—

—

—

Open

GPIO6

UART1-RX Input

SPI-DIN Input

—

—

—

Open

GPIO7

I2C-SCL Output

UART2-TX Output

SPI-SCS

Output

UART1-RTSX

Output

—

Open

GPIO8

I2C-SDAI/O

UART2-RX Input

SPI-SCLK

Output

UART1-CTSX

Input

—

Open

GPIO9

—

—

—

—

ADC3 Input

Open

GPIO10

—

—

—

—

ADC4 Input

Open

GPIO11

I2C-SCL Output

SPI-DOUT Output

—

—

—

Open

GPIO12

I2C-SDAI/O

SPI-DIN Input

—

—

—

Open

GPIO13

UART1-RTSX

Output

—

—

—

—

Open

GPIO14

UART1-CTSX Input

—

—

—

ADC5 Input

Open

GPIO15

WakeUp1 Input

—

—

—

—

Open

GPIO25

—

—

—

—

—

Open

Note: Handle with care because of using operation mode switching.