Product Summary

The P87C552SFAA is a Single-Chip 8-bit microcontroller. It is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The P87C552SFAA contains a 8k ×8 non-volatile EPROM, a 256×8 read/write data memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit timer/event counters (identical to the timers of the 80C51), an additional 16-bit timer coupled to capture and compare latches, a 15-source, four-priority-level, nested interrupt structure, an 8-input ADC, a dual DAC pulse width modulated interface, two serial interfaces (UART and I2C-bus), a “watchdog” timer and on-chip oscillator and timing circuits. For systems that require extra capability, the P87C552SFAA can be expanded using standard TTL compatible memories and logic.


P87C552SFAA absolute maximum ratings: (1)Storage temperature range:–65℃ to +150℃; (2)Voltage on any other pin to VSS:–0.5 to +6.5V; (3)Input, output DC current on any single I/O pin: 5.0mA; (4)Power dissipation (based on package heat transfer limitations, not device power consumption): 1.0W.


P87C552SFAA features: (1)80C51 central processing unit; (2)8k×8 ROM expandable externally to 64k bytes; (3)ROM code protection; (4)An additional 16-bit timer/counter coupled to four capture registers and three compare registers; (5)Two standard 16-bit timer/counters; (6)256×8 RAM, expandable externally to 64k bytes; (7)Capable of producing eight synchronized, timed outputs; (8)A 10-bit ADC with eight multiplexed analog inputs; (9)Two 8-bit resolution, pulse width modulation outputs; (10)Five 8-bit I/O ports plus one 8-bit input port shared with analog inputs; (11)I2C-bus serial I/O port with byte oriented master and slave functions; (12)Full-duplex UART compatible with the standard 80C51; (13)On-chip watchdog timer; (14)Three speed ranges: 3.5 to 16MHz, 3.5 to 24MHz (ROM, ROMless only), 3.5 to 30MHz (ROM, ROMless only).


P87C552SFAA block diagram

Image Part No Mfg Description Data Sheet Download Pricing


Data Sheet


NXP Semiconductors

8-bit Microcontrollers (MCU) 4/8K OTPROM 2.7-5.5V 33MHZ 128/256B RAM

Data Sheet

0-418: $8.84
418-500: $8.26