P89C668 Philips Semiconductors, P89C668 Datasheet - Page 3

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P89C668

Manufacturer Part Number

P89C668

Description

80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM

Manufacturer

Philips Semiconductors

Datasheet

1.P89C668.pdf (54 pages)

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Current page: 3 of 54
Download datasheet (300Kb)

Philips Semiconductors

BLOCK DIAGRAM

2001 Jul 27

80C51 8-bit Flash microcontroller family

64KB ISP Flash with 8KB RAM

EAV

PSEN

RST

ALE

PP

V

V

CC

SS

XTAL1

CONTROL

REGISTER

TIMING

RAM ADDR

REGISTER

OSCILLATOR

AND

B

PD

XTAL2

RAM

ACC

TMP2

DRIVERS

P1.0–P1.7

PORT 1

PORT 1

LATCH

PSW

DRIVERS

P0.0–P0.7

PORT 0

PORT 0

LATCH

ALU

SCL

SDA

TMP1

I

2

C

3

TIMERS

P.C.A.

SFRs

P2.0–P2.7

DRIVERS

PORT 2

PORT 2

LATCH

POINTER

DRIVERS

STACK

P3.0–P3.7

PORT 3

PORT 3

LATCH

FLASH

8

PROGRAM

REGISTER

PROGRAM

MULTIPLE

ADDRESS

COUNTER

MENTER

DPTR’S

INCRE-

BUFFER

PC

8

P89C668

su01089

Preliminary data

16

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