S87C552-4A68

Product Summary

The S87C552-4A68 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 87C552 has the same instruction set as the 80C51. The S87C552-4A68 contains a 8k × 8 a volatile 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, two-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 S87C552-4A68 can be expanded using standard TTL compatible memories and logic.

Parametrics

S87C552-4A68 absolute maximum ratings: (1)Storage temperature range: –65℃ to +150℃; (2)Voltage on EA/VPP to VSS: –0.5V to +13V; (3)Voltage on any other pin to VSS: –0.5V to +6.5V; (4)Input, output DC current on any single I/O pin: 5.0mA; (5) Power dissipation (based on package heat transfer limitations, not device power consumption): 1.0W.

Features

S87C552-4A68 features: (1)80C51 central processing unit; (2)8k×8 EPROM expandable externally to 64k bytes; (3)An additional 16-bit timer/counter coupled to four capture registers and three compare registers; (4)Two standard 16-bit timer/counters; (5)256×8 RAM, expandable externally to 64k bytes; (6)Capable of producing eight synchronized, timed outputs; (7)A 10-bit ADC with eight multiplexed analog inputs; (8)Two 8-bit resolution, pulse width modulation outputs; (9)Five 8-bit I/O ports plus one 8-bit input port shared with analog inputs; (10)I2C-bus serial I/O port with byte oriented master and slave functions; (11)Full-duplex UART compatible with the standard 80C51; (12)On-chip watchdog timer; (13)16MHz speed; (14)Extended temperature ranges; (15)OTP package available.

Diagrams