参数资料
型号: MB89PV950CF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64
封装: 0.80 MM PITCH, PIGGY BACK, MQFP-64
文件页数: 97/110页
文件大小: 619K
代理商: MB89PV950CF
HARDWARE CONFIGURATION
2– 72
(4) Description of operation
The watchdog timer enables the detection of program malfunction.
(a) Starting watchdog timer
The watchdog timer starts when 0101 is written at the watchdog timer
control bits.
(b) Clearing watchdog timer
When 0101 is written at the watchdog timer control bits after start, the
watchdog timer is cleared. The counter of the watchdog timer is cleared
when changing to the standby mode (STOP, SLEEP, WATCH).
(c) Watchdog timer reset
If the watchdog timer is not cleared within the time given in the table below,
a watchdog timer reset occurs to reset the chip internally.
(d) Stopping watchdog timer
Once started, the watchdog timer will not stop until a reset occurs.
Peripherals
Minimum time
Maximum time
Approx. 419 ms
Approx. 839 ms
fCH = 5 MHz
Time-base timer cycle
1/221fCH
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