参数资料
型号: ST72C314J4B1XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, PLASTIC, SDIP-42
文件页数: 92/153页
文件大小: 2235K
代理商: ST72C314J4B1XXX
ST72334J/N, ST72314J/N, ST72124J
43/153
I/O PORTS (Cont’d)
12.4 LOW POWER MODES
12.5 INTERRUPTS
The external interrupt event generates an interrupt
if the corresponding configuration is selected with
DDR and OR registers and the I-bit in the CC reg-
ister is reset (RIM instruction).
Table 8. Port Configuration
Mode
Description
WAIT
No effect on I/O ports. External interrupts
cause the device to exit from WAIT mode.
HALT
No effect on I/O ports. External interrupts
cause the device to exit from HALT mode.
Interrupt Event
Event
Flag
Enable
Control
Bit
Exit
from
Wait
Exit
from
Halt
External interrupt on
selected external
event
-
DDRx
ORx
Yes
Port
Pin name
Input
Output
OR = 0
OR = 1
OR = 0
OR = 1
High-Sink
Port A
PA7:6
floating
true open-drain
Yes
PA5:4
floating
pull-up
open drain
push-pull
PA3
floating
floating interrupt
open drain
push-pull
No
PA2:0
floating
pull-up interrupt
open drain
push-pull
Port B
PB4:3
floating
floating interrupt
open drain
push-pull
PB7:5, PB2:0
floating
pull-up interrupt
open drain
push-pull
Port C
PC7:4, PC1:0
floating
pull-up
open drain
push-pull
PC3:2
floating
pull-up
open drain
push-pull
Yes
Port D
PD7:0
floating
pull-up
open drain
push-pull
No
Port E
PE7:4
floating
pull-up
open drain
push-pull
Yes
PE1:0
floating
pull-up
open drain
push-pull
No
Port F
PF7:6
floating
pull-up
open drain
push-pull
Yes
PF4
floating
pull-up
open drain
push-pull
No
PF2
floating
floating interrupt
open drain
push-pull
PF1:0
floating
pull-up interrupt
open drain
push-pull
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