ST72321AR9-Auto STMicroelectronics, ST72321AR9-Auto Datasheet - Page 75

• Manufacturer Part Number: ST72321AR9-Auto
• Description: 8-bit MCU for automotive with 60 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

ST72321xx-Auto
9.4
9.5
Table 31.
Low power modes
Table 32.
Interrupts
The external interrupt event generates an interrupt if the corresponding configuration is
selected with DDR and OR registers and the interrupt mask in the CC register is not active
(RIM instruction).
Table 33.
Table 34.
External interrupt on selected
external event
0000h
0001h
0002h
Port B
Port C PC7:0
Port D PD7:0
Port E
Port F
Reset value of all I/O port registers
Port
Address (Hex.)
Mode
Wait
Halt
PB7, PB3
PB6:5, PB4, PB2:0
PE7:3, PE1:0
PE2 (Flash devices)
PE2 (ROM devices)
PF7:3
PF2
PF1:0
Interrupt event
Pin name
I/O port configuration (continued)
Effect of low power modes on I/O ports
I/O port interrupt control/wake-up capability
I/O port register map and reset values
No effect on I/O ports. External interrupts cause the device to exit from Wait mode.
No effect on I/O ports. External interrupts cause the device to exit from Halt mode.
PADR
PADDR
PAOR
Register label
Doc ID 13829 Rev 1
OR = 0
floating
floating
floating
floating
floating
floating
floating
floating
Input (DDR = 0)
MSB
Event flag
7
0
floating
-
floating interrupt
floating interrupt
pull-up interrupt
pull-up interrupt
6
0
OR = 1
pull-up
pull-up
pull-up
pull-up
Effect
DDRx, ORx
control bit
pull-up input only
5
0
Enable
4
0
open-drain
open-drain
open-drain
open-drain
open drain
open drain
open-drain
open-drain
open-drain
OR = 0
Exit from
3
0
Output (DDR = 1)
Wait
Yes
2
0
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
Exit from
OR = 1
1
0
I/O ports
Halt
Yes
75/243
LSB
0
0