83C576 查看數據表（PDF） - Philips Electronics

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比赛名单

83C576

80C51 8-bit microcontroller family 8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators, failure detect circuitry, watchdog timer

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller family

8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators,

failure detect circuitry, watchdog timer

Product specification

83C576/87C576

TXD

INT. BUS

WRITE TO LATCH

TXI

D

Q

P3.1

LATCH

PROGRAMMABLE OUTPUT BUFFER

Figure 13. TXI (AUXR.2) Bit Inverts the TxD Pin (P3.1) When Set

P3.1

PIN

SU00711

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 14. PCA Watchdog Timer

SU00042

WATCHDOG FEED SEQUENCE

MOV WFEED1,#0A5H

MOV WFEED2,#5AH

OSC/2

PRESCALER

WDL

(C1H)

8–BIT DOWN

COUNTER

WDTOF (PCON.2)

RESET

1998 Jun 04

SHADOW REGISTER

FOR WDCON

PRE2

PRE1

PRE0

LVRE

OFRE

DPD

WDRUN

WDMOD

WDCON

(C4H)

Figure 15. Watchdog Timer in 87C576 and 80C576 / 83C576 (EA = 0)

SU00657C

19

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