P87C52 PHILIPS [NXP Semiconductors], P87C52 Datasheet - Page 7

• Manufacturer Part Number: P87C52
• Description: 80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer
• Manufacturer: PHILIPS [NXP Semiconductors]

1. P3.2 and P3.5 absent in the TSSOP38 package.
Philips Semiconductors
BLOCK DIAGRAM 2 (CPU-ORIENTED)
NOTE:
2003 Jan 24
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
ALE/PROG
EA / V
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
7
TIMERS
SFRs
P2.0–P2.7
DRIVERS
PORT 2
PORT 2
LATCH
POINTER
DRIVERS
STACK
P3.0–P3.7
PORT 3
PORT 3
LATCH
P80C3xX2; P80C5xX2;
ROM/EPROM
1
8
PROGRAM
COUNTER
MULTIPLE
PROGRAM
REGISTER
ADDRESS
MENTER
BUFFER
DPTR’S
INCRE-
PC
8
P87C5xX2
su01723
Product data
16