P87C52SBBB NXP Semiconductors, P87C52SBBB Datasheet - Page 5

• Manufacturer Part Number: P87C52SBBB
• Description: MCU 8-Bit 87C 80C51 CISC 8KB EPROM 3.3V/5V 44-Pin PQFP
• Manufacturer: NXP Semiconductors

Specifications of P87C52SBBB

• Package: 44PQFP
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 33 MHz
• Ram Size: 256 Byte
• Program Memory Size: 8 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 32
• Interface Type: UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

Philips Semiconductors
BLOCK DIAGRAM
2000 Aug 07
80C51 8-bit microcontroller family
4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V),
low power, high speed (33 MHz), 128/256 B RAM
ALE/PROG
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
5
TIMERS
SFRs
P2.0–P2.7
DRIVERS
PORT 2
PORT 2
LATCH
80C51/87C51/80C52/87C52
POINTER
DRIVERS
STACK
P3.0–P3.7
PORT 3
PORT 3
LATCH
ROM/EPROM
8
PROGRAM
REGISTER
PROGRAM
MULTIPLE
ADDRESS
COUNTER
MENTER
DPTR’S
INCRE-
BUFFER
PC
8
Product specification
SU00845
16