ST72561R9 STMicroelectronics, ST72561R9 Datasheet - Page 50

• Manufacturer Part Number: ST72561R9
• Description: 8-BIT MCU WITH FLASH OR ROM, 10-BIT ADC, 5 TIMERS, SPI, LINSCI(TM), ACTIVE CAN
• Manufacturer: STMicroelectronics

Specifications of ST72561R9

• Hdflash Endurance: 100 cycles, data retention 40 years at 85°C
• 5 Power Saving Modes: Halt, Auto Wake Up From Halt, Active Halt, Wait and Slow

ST72561
I/O PORTS (Cont’d)
9.6 I/O PORT REGISTER CONFIGURATIONS
The I/O port register configurations are summa-
rized as follows.
9.6.1 Standard Ports
PB7:6, PC0, PC3, PC7:5, PD3:2, PD5, PE7:0,
PF7:0
9.6.2 Interrupt Ports
PA0,2,4,6; PB0,2,4; PC1; PD0,6
(with pull-up)
50/265
floating input
pull-up input
open drain output
push-pull output
floating input
pull-up interrupt input
open drain output
push-pull output
MODE
MODE
DDR
DDR
0
0
1
1
0
0
1
1
OR
OR
0
1
0
1
0
1
0
1
PA1,3,5,7; PB1,3,5; PC2; PD1,4,7
(without pull-up)
9.6.3 Pull-up Input Port (CANTX requirement)
PC4
The PC4 port cannot operate as a general pur-
pose output. The CAN peripheral controls it direct-
ly when enabled. Otherwise, PC4 is a pull-up in-
put.
If DDR = 1 it is still possible to read the port
through the DR register.
floating input
floating interrupt input
open drain output
push-pull output
MODE
pull-up input
MODE
DDR
0
0
1
1
OR
0
1
0
1