參數(shù)資料
型號: UPD750004GB
廠商: NEC Corp.
英文描述: 4 BIT SINGLE-CHIP MICROCONTROLLER
中文描述: 4位單片機
文件頁數(shù): 25/84頁
文件大小: 719K
代理商: UPD750004GB
25
μ
PD750004, 750006, 750008, 750004(A), 750006(A), 750008(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
Fig. 6-4 Block Diagram of the Basic Interval Timer/Watchdog Timer
Note
Instruction execution
From the clock
generator
Internal bus
4
f
X
/2
5
f
X
/2
7
f
X
/2
9
f
X
/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
相關(guān)PDF資料
PDF描述
UPD750004GBA 4 BIT SINGLE-CHIP MICROCONTROLLER
UPD750006 4 BIT SINGLE-CHIP MICROCONTROLLER
UPD750006A 4 BIT SINGLE-CHIP MICROCONTROLLER
UPD750006CU 4 BIT SINGLE-CHIP MICROCONTROLLER
UPD750006CUA 4 BIT SINGLE-CHIP MICROCONTROLLER
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