80C575 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

80C575

80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller family

8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer

Product specification

80C575/83C575/

87C575

WRITE TO

CCAP4H

RESET

WRITE TO

CCAP4L

0

1

ENABLE

CIDL

WDTE

––

––

CCAP4H

CCAP4L

16–BIT COMPARATOR

MATCH

––

CPS1

CPS0

ECF

CMOD

(D9H)

RESET

CH

CL

PCA TIMER/COUNTER

––

ECOMn CAPPn CAPNn MATn

TOGn

PWMn

ECCFn

CCAPM4

(DEH)

0

0

1

X

0

X

Figure 13. PCA Watchdog Timer

SU00042

WATCHDOG FEED SEQUENCE

MOV WFEED1,#0A5H

MOV WFEED2,#5AH

OSC/12

PRESCALER

WDL

(C1H)

8–BIT DOWN

COUNTER

RESET

SHADOW REGISTER

FOR WDCON

PRE2

PRE1

PRE0

LVRE

OFRE

WDRUN

WDTOF

WDMOD

WDCON

(C0H)

Figure 14. Watchdog Timer in 87C575 and 80C575 / 83C575 (EA = 0)

SU00240

1998 May 01

18

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