P87C754EBDDB 查看數據表（PDF） - Philips Electronics

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P87C754EBDDB

80C51 8-bit microcontroller family 4K/256 OTP/ROM, DAC, comparator, UART, reference

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller family

4K/256 OTP/ROM, DAC, comparator, UART, reference

Preliminary specification

83C754/87C754

AVCC

DECOUPLE

VREG

XYDACBIAS

XYSOURCE

XYDAC

AC1

AC2

AC3

BANDGAP REF*

20K

AC4

1K

DCON 7:0 (84H)

ZDAC

ZIN

YIN

XIN

XYZRAMP

*ENABLED/DISABLED BY AC0

AC6

ANALOG

MUX

MUX0

MUX1

MUX2

AC5

BANDGAP REF

EXT

Figure 3. Analog Section

READ

LATCH

INT. BUS

WRITE TO

LATCH

ALTERNATE

OUTPUT

FUNCTION

D

Q

LATCH

CL

Q

VDD

INTERNAL*

PULL-UP

PIN

READ

PIN

ALTERNATE INPUT

FUNCTION

*PINS LISTED AS OPEN DRAIN WILL NOT HAVE THIS PULLUP

SU00671

Figure 4. Typical Port Bit Latches and I/O Buffers

10K

AC7

TO PCA TRIGGER

SU00765A

1998 Apr 23

8

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