參數(shù)資料
型號(hào): UPD70741GC-25-8EU
廠商: NEC Corp.
元件分類: 16位微控制器
英文描述: V821TM 32-/16-BIT MICROPROCESSOR
中文描述: V821TM 32-/16-BIT微處理器
文件頁(yè)數(shù): 43/112頁(yè)
文件大小: 605K
代理商: UPD70741GC-25-8EU
μ
PD70741
43
10. WATCHDOG TIMER FUNCTIONS
The watchdog timer is intended to prevent program crash and deadlock.
10.1 Features
The following three different time-out time values can be specified: 10.5 ms, 41.9 ms, and 167.8 ms (when
system clock
φ
= 25 MHz)
Watchdog timer time-out output (WDTOUT)
Figure 10-1. Watchdog Timer Block Diagram
φ
φ
φ
φ
/2
10
/2
12
/2
14
S
Q
R
WDTOUT
Frequency
divider
Watchdog
timer
(8 bits)
Time-out
Clear
WDTM register CLR bit
RESET
STOP
Time-out
Oscillation
settling time
control circuit
Active timer
(5 bits)
Remark
: System clock
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