參數(shù)資料
型號: UPD750106GB-XXX-3BS-MTX
廠商: NEC Corp.
英文描述: MICROCONTROLLER|4-BIT|UPD75XL CPU|CMOS|QFP|44PIN|PLASTIC
中文描述: 單片機| 4位| UPD75XL的CPU |的CMOS | QFP封裝| 44PIN |塑料
文件頁數(shù): 25/80頁
文件大?。?/td> 525K
代理商: UPD750106GB-XXX-3BS-MTX
25
μ
PD750104, 750106, 750108, 750104(A), 750106(A), 750108(A)
6.5 Basic Interval Timer/Watchdog Timer
The basic interval timer/watchdog timer has these functions:
Interval timer operation which generates a reference timer interrupt
Operation as a watchdog timer for detecting program crashes and resetting the CPU
Selection of wait time for releasing the standby mode and counting the wait time
Reading out the count value
Figure 6-4. Block Diagram of the Basic Interval Timer/Watchdog Timer
Note
Instruction execution
From the clock
generator
Internal bus
4
f
CC
/2
5
f
CC
/2
7
f
CC
/2
9
f
CC
/2
12
MPX
Basic interval timer
(8-bit frequency divider)
Clear signal
Clear signal
BT interrupt
request flag
Vectored
interrupt
request
signal
IRQBT
Wait release
signal for standby
release
Set
signal
BT
8
BTM3
BTM2
BTM1
BTM0
BTM
SET1
Note
3
1
WDTM
Internal
reset signal
SET1
Note
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