STA8088FG

Pin description

Doc ID 022666 Rev 2

11/17

2.8

Port 1 pins

Port 1 consists of a 32-bit bidirectional I/O port (only9-bit are used in STA8088FG).

It can be either used as general purpose Input or Output port, or configured according to the

associated alternate functions.

Table 5.

Port 0 pins

Symbol

I/O voltage

I/O

Mode

Functions

VFQFPN56

P0.0

VDD_IOR1

IO

Default

GPIO.0: General Purpose IO

35

I

A

PPS_IN: Pulse Per Second Input

O

B

PPS_OUT: Pulse Per Second Output

O

C

SSP_CSN: SSP Chip Select Active Low

P0.8

VDD_IOR5

O

Default

55

IO

A

GPIO.8: General Purpose IO

IO

B

I2C_SD: I2C Serial Data

P0.9

VDD_IOR5

I

Default

CAN1RX(1): CAN 1 Receive Data Input

1

IO

A

GPIO.9: General Purpose IO

O

B

I2C_SCLK: I2C Clock

1.

Only for STA8088FGB (see

Figure 5: Ordering information scheme).

Table 6.

Port 1 pins

Symbol

I/O Voltage

I/O

Mode

Functions

VFQFPN56

P1.0

VDD_IOR1

ODefault

SSP_CSN/IOPWRSEL_R1: SSP chip select active

low / I/O Ring 1 power selection

40

I/O

A

GPIO32: general purpose I/O

I/O

B

SIGNGGPS: GGPS 3-bit coding output (sign)

O

C

SQI_CEN: SQI Flash chip enable

P1.1

VDD_IOR1

I/O

Default

SSP_CLK: SSP clock

41

I/O

A

GPIO33: general purpose I/O

I/O

B

CLOCK_GGPS: GGPS clock out

O

C

SQI_CLK: SQI Flash clock

P1.2

VDD_IOR1

I

Default

SSP_DI: SSP serial data input

42

I/O

A

GPIO34: general purpose I/O

I/O

B

SIGNGNS: GNS 3-bit coding output (sign)

IO

C

SQI_SIO0/SI: SQI Flash data I/O 0 / serial I