UPSD3312D datasheet(84/272 Pages) STMICROELECTRONICS

84 / 272 page

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I/O ports of MCU module

UPSD33xx

84/272

Doc ID 9685 Rev 7

Table 44.

P4SFS0: Port 4 Special Function Select 0 register (SFR 92h, reset value

00h)

Table 45.

P4SFS1: Port 4 Special Function Select 1 register (SFR 93h, reset value

00h)

Table 46.

P4SFS0 and P4SFS1 details

R,W

GPIO

UART1 Transmit, TXD1

ADC Chn 3 Input, ADC3

R,W

GPIO

SPI Clock, SPICLK

ADC Chn 4 Input, ADC4

R,W

GPIO

SPI Receive, SPIRXD

ADC Chn 5 Input, ADC5

R,W

GPIO

SPI Transmit, SPITXD

ADC Chn 6 Input, ADC6

R,W

GPIO

SPI Select, SPISEL_

ADC Chn 7 Input, ADC7

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P4SF07

P4SF06

P4SF05

P4SF04

P4SF03

P4SF02

P4SF01

P4SF00

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P4SF17

P4SF16

P4SF15

P4SF14

P4SF13

P4SF12

P4SF11

P4SF10

Port 4 pin

R/W

Default port function

Alternate 1 port

function

Alternate 2 port

function

P4SFS0[i] = 0,

P4SFS1[i] = x

P4SFS0[i] = 1,

P4SFS1[i] = 0

P4SFS0[i] = 1,

P4SFS1[i] = 1

Port 4 Pin, i = 0.. 7

R,W

GPIO

PCA0 module 0, TCM0 Timer 2 Count Input, T2

R,W

GPIO

PCA0 module 1, TCM1

Timer 2 Trigger Input,

TX2

R,W

GPIO

PCA0 module 2, TCM2

UART1 Receive, RXD1

R,W

GPIO

PCA0 Ext Clock,

PCACLK0

UART1 Transmit, TXD1

R,W

GPIO

PCA1 module 3, TCM3

SPI Clock, SPICLK

R,W

GPIO

PCA1 module 4, TCM4

SPI Receive, SPIRXD

R,W

GPIO

PCA1 module 5, TCM5

SPI Transmit, SPITXD

R,W

GPIO

PCA1 Ext Clock,

PCACLK1

SPI Select, SPISEL_

Table 43.

P1SFS0 and P1SFS1 details (continued)

Port 1 pin

R/W

Default port function

Alternate 1 port

function

P1SFS0[i] = 0, P1SFS1[i] = x

P1SFS0[i] = 1,

P1SFS1[i] = 0

Port 1 Pin, i = 0.. 7

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