87C575 Philips Semiconductors, 87C575 Datasheet - Page 3

• Manufacturer Part Number: 87C575
• Description: 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless/ 4 comparator/ failure detect circuitry/ watchdog timer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
1998 May 01
80C51 8-bit microcontroller family
8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer
PSEN
RST
ALE
EA
V
V
CC
SS
XTAL1
CONTROL
REGISTER
TIMING
RAM ADDR
REGISTER
OSCILLATOR
AND
B
PD
XTAL2
RAM
ACC
TMP2
P1.0-P1.7
DRIVERS
PORT 1
PORT 1
LATCH
PSW
DRIVERS
P0.0-P0.7
PORT 0
PORT 0
LATCH
ALU
TMP1
3
TIMERS
SFRs
P2.0-P2.7
DRIVERS
PCA
PORT 2
PORT 2
LATCH
POINTER
P3.0-P3.7
DRIVERS
STACK
PORT 3
PORT 3
LATCH
EPROM
ROM/
80C575/83C575/
PROGRAM
REGISTER
PROGRAM
ADDRESS
COUNTER
MENTER
INCRE-
BUFFER
DPTR
PC
Product specification
SU00238
87C575