P87C52X2BA NXP Semiconductors, P87C52X2BA Datasheet - Page 7

• Manufacturer Part Number: P87C52X2BA
• Description: MCU 8-Bit 87C 80C51 CISC 8KB EPROM 5V 44-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P87C52X2BA

• Package: 44PLCC
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 33 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 32
• Interface Type: UART
• Number Of Timers: 3
• Ram Size: 256 Byte
• Program Memory Size: 8 KB
• Program Memory Type: EPROM
• Operating Temperature: 0 to 70 °C

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