st72324bk STMicroelectronics, st72324bk Datasheet - Page 54

• Manufacturer Part Number: st72324bk
• Description: 3 V/5 V Range 8-bit Mcu With 4/8 Kbyte Rom, 10-bit Adc, Four Timers And Spi
• Manufacturer: STMicroelectronics

I/O ports
8.5.1
54/167
I/O port Implementation
The I/O port register configurations are summarized as follows.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
floating input
pull-up input
open drain output
push-pull output
floating input
pull-up interrupt input
open drain output
push-pull output
floating input
floating interrupt input
open drain output
push-pull output
floating input
open drain (high sink ports)
Port A
Port B
Port C
Port D
Port
PA5:4, PC7:0, PD5:0, PE1:0, PF7:6, 4 standard ports
PB4, PB2:0, PF1:0 interrupt ports (with pull-up)
PA3, PB3, PF2 interrupt ports (without pull-up)
PA7:6
Port configuration
PA7:6
PA5:4
PA3
PB3
PB4, PB2:0
PC7:0
PD5:0
Pin name
true open-drain ports
Mode
Mode
Mode
OR = 0
floating
floating
floating
floating
floating
floating
Mode
floating
Input
floating interrupt
floating interrupt
pull-up interrupt
OR = 1
pull-up
pull-up
pull-up
open drain
open drain
open drain
open drain
open drain
open drain
OR = 0
DDR
DDR
DDR
0
0
1
1
0
0
1
1
0
0
1
1
true open-drain
ST72323 ST72323L
Output
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
OR = 1
OR
OR
OR
DDR
0
1
0
1
0
0
1
0
0
1
1
1
0
1