ST72F324LJ2T Datasheet, PDF (43/151 Pages) STMicroelectronics – 3V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE

ST72F324L, ST72324BL
I/O PORTS (Cont’d)
9.5.1 I/O Port Implementation
The I/O port register configurations are summa-
rised as follows.
Standard Ports
PA5:4, PC7:0, PD5:0,
PE1:0, PF7:6, 4
MODE
floating input
pull-up input
open drain output
push-pull output
DDR OR
0
0
0
1
1
0
1
1
Interrupt Ports
PB4, PB2:0, PF1:0 (with pull-up)
MODE
floating input
pull-up interrupt input
open drain output
push-pull output
DDR OR
0
0
0
1
1
0
1
1
PA3, PB3, PF2 (without pull-up)
MODE
floating input
floating interrupt input
open drain output
push-pull output
DDR
0
0
1
1
True Open Drain Ports
PA7:6
MODE
floating input
open drain (high sink ports)
OR
0
1
0
1
DDR
0
1
Table 12. Port Configuration
Port
Port A
Port B
Port C
Port D
Port E
Port F
Pin name
PA7:6
PA5:4
PA3
PB3
PB4, PB2:0
PC7:0
PD5:0
PE1:0
PF7:6, 4
PF2
PF1:0
OR = 0
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
Input
OR = 1
floating
pull-up
floating interrupt
floating interrupt
pull-up interrupt
pull-up
pull-up
pull-up
pull-up
floating interrupt
pull-up interrupt
Output
OR = 0
OR = 1
true open-drain
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
open drain
push-pull
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