UPSD33XX Datasheet, PDF (60/231 Pages) STMicroelectronics – Fast 8032 MCU with Programmable Logic

uPSD33xx
Table 28. P3SFS: Port 3 Special Function Select Register (SFR 91h, reset value 00h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
P3SFS7
P3SFS6
P3SFS5
P3SFS4
P3SFS3
P3SFS2
P3SFS1
P3SFS0
Details
Port 3 Pin
R/W
Default Port Function
P3SFS[i] - 0; Port 3 Pin, i = 0..7
Alternate Port Function
P3SFS[i] - 1; Port 3 Pin, i = 0..7
0
R,W
GPIO
UART0 Receive, RXD0
1
R,W
GPIO
UART0 Transmit, TXD0
2
R,W
GPIO
Ext Intr 0/Timer 0 Gate, EXT0INT/TG0
3
R,W
GPIO
Ext Intr 1/Timer 1 Gate, EXT1INT/TG1
4
R,W
GPIO
Counter 0 Input, C0
5
R,W
GPIO
Counter 0 Input, C1
6
R,W
GPIO
I²C Data, I2CSDA
7
R,W
GPIO
I²C Clock, I2CCL
Table 29. P1SFS0: Port 1 Special Function Select 0 Register (SFR 8Eh, reset value 00h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
P1SF07
P1SF06
P1SF05
P1SF04
P1SF03
P1SF02
P1SF01
P1SF00
Details
Table 30. P1SFS1: Port 1 Special Function Select 1 Register (SFR 8Fh, reset value 00h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
P1SF17
P1SF16
P1SF15
P1SF14
P1SF13
P1SF12
P1SF11
P1SF10
Table 31. P1SFS0 and P1SFS1 Details
Default Port Function
Port 1 Pin
R/W
P1SFS0[i] = 0
P1SFS1[i] = x
Port 1 Pin, i = 0.. 7
0
R,W
GPIO
1
R,W
GPIO
2
R,W
GPIO
3
R,W
GPIO
4
R,W
GPIO
5
R,W
GPIO
6
R,W
GPIO
7
R,W
GPIO
Alternate 1 Port Function Alternate 2 Port Function
P1SFS0[i] = 1
P1SFS1[i] = 0
P1SFS0[i] = 1
P1SFS1[i] = 1
Port 1 Pin, i = 0.. 7
Port 1 Pin, i = 0.. 7
Timer 2 Count Input, T2 ADC Chn 0 Input, ADC0
Timer 2 Trigger Input, TX2 ADC Chn 1 Input, ADC1
UART1 Receive, RXD1
ADC Chn 2 Input, ADC2
UART1 Transmit, TXD1 ADC Chn 3 Input, ADC3
SPI Clock, SPICLK
ADC Chn 4 Input, ADC4
SPI Receive, SPIRXD
ADC Chn 5 Input, ADC5
SPI Transmit, SPITXD
ADC Chn 6 Input, ADC6
SPI Select, SPISEL_
ADC Chn 7 Input, ADC7
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