p89c538nbbb NXP Semiconductors, p89c538nbbb Datasheet - Page 3

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p89c538nbbb

Manufacturer Part Number
p89c538nbbb
Description
Cmos Single-chip 8-bit Microcontrollers With Flash Program Memory
Manufacturer
NXP Semiconductors
Datasheet
Philips Semiconductors
BLOCK DIAGRAM
1997 Jun 05
ALE/PROG
CMOS single-chip 8-bit microcontrollers
with FLASH program memory
EAV
PSEN
RST
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
TMP1
3
TIMERS
SFRs
P2.0–P2.7
DRIVERS
PORT 2
PORT 2
LATCH
POINTER
DRIVERS
STACK
P3.0–P3.7
PORT 3
PORT 3
LATCH
89C535/89C536/89C538
ROF/EPROM
8
PROGRAM
REGISTER
PROGRAM
MULTIPLE
ADDRESS
COUNTER
MENTER
DPTR’S
INCRE-
BUFFER
PC
Preliminary specification
8
16
SU00854

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