參數(shù)資料
型號: 87C575
廠商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller family(80C51 8位微控制器系列)
中文描述: 80C51的8位單片機系列(80C51的8位微控制器系列)
文件頁數(shù): 18/40頁
文件大小: 383K
代理商: 87C575
Philips Semiconductors
Product specification
80C575/83C575/
87C575
80C51 8-bit microcontroller family
8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer
1998 May 01
18
––
ECOMn
CAPPn
CAPNn
MATn
TOGn
PWMn
ECCFn
CCAPM4
(DEH)
CH
CL
CCAP4H
CCAP4L
RESET
PCA TIMER/COUNTER
X
0
0
0
16–BIT COMPARATOR
MATCH
ENABLE
WRITE TO
CCAP4H
RESET
WRITE TO
CCAP4L
0
1
1
CMOD
(D9H)
CIDL
WDTE
––
––
––
CPS1
CPS0
ECF
X
SU00042
Figure 13. PCA Watchdog Timer
PRE2
PRE1
PRE0
LVRE
OFRE
WDRUN
WDTOF
WDMOD
WDCON
(C0H)
RESET
8–BIT DOWN
COUNTER
PRESCALER
OSC/12
MOV WFEED1,#0A5H
MOV WFEED2,#5AH
WATCHDOG FEED SEQUENCE
SHADOW REGISTER
FOR WDCON
WDL
(C1H)
SU00240
Figure 14. Watchdog Timer in 87C575 and 80C575 / 83C575 (EA = 0)
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