參數(shù)資料
型號(hào): UPD784215AGF
廠商: NEC Corp.
英文描述: 16-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16位單晶片微控制器
文件頁(yè)數(shù): 51/100頁(yè)
文件大?。?/td> 561K
代理商: UPD784215AGF
Data Sheet U14121EJ2V0DS00
51
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
7.12 Watchdog Timer
A watchdog timer is provided to detect a CPU runaway. This watchdog timer generates a non-maskable or
maskable interrupt unless it is cleared by software within a specified interval time. Once enabled to operate, the
watchdog timer cannot be stopped by software. Whether the interrupt by the watchdog timer or the interrupt input
from the NMI pin takes precedence can be specified.
Figure 7-17. Block Diagram of Watchdog Timer
Note
Write “+” to bit 7 (RUN) of the watchdog timer (WDM)
Remark
f
CLK
: Internal system clock (f
XX
to f
XX
/8)
f
CLK
/2
21
f
CLK
/2
20
f
CLK
/2
19
f
CLK
/2
17
f
CLK
INTWDT
HALT
IDLE
STOP
RUN
Note
Timer
S
相關(guān)PDF資料
PDF描述
UPD784215A 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214A 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AGC 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AY 16-BIT SINGLE-CHIP MICROCONTROLLERS
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