80C451 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
80C451 Datasheet PDF : 22 Pages
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Philips Semiconductors
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, expanded I/O
Product specification
80C451/83C451/87C451
BLOCK DIAGRAM
VCC
VSS
RAM ADDR
REGISTER
P0.0–P0.7
P2.0–P2.7
P4.0–P4.7
P5.0–5.7
PORT 0
DRIVERS
PORT 2
DRIVERS
PORT 4
DRIVERS
PORT 5
DRIVERS
RAM
PORT 0
LATCH
PORT 2
LATCH
PORT 4
LATCH
PORT 5
LATCH
4K x 8
ROM/EPROM
B
REGISTER
ACC
TMP2
TMP1
STACK
POINTER
ALU
PSW
PCON
TL1
SCON TMOD TCON
TH0 TL0 TH1
SBUF IE
IP
INTERRUPT, SERIAL
PORT AND TIMER BLOCKS
PSEN
ALE/PROG
EAVPP
RST
TIMING
AND
CONTROL
PD
PORT 1
LATCH
OSCILLATOR
XTAL1
XTAL2
PORT 1
DRIVERS
P1.0–P1.7
PORT 6
LATCH
PORT 6
DRIVERS
P6.0–P6.7
PORT 3
LATCH
PORT 6
CONTROL/STATUS
PORT 3
DRIVERS
IDS ODS BFLAG
AFLAG
P3.0–P3.7
PROGRAM
ADDRESS
REGISTER
BUFFER
PC
INCRE-
MENTER
PROGRAM
COUNTER
DPTR
SU00086
1998 May 01
3
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