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87C552

80C51 8-bit microcontroller 8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller

8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O

Product specification

87C552

DESCRIPTION

The 87C552 Single-Chip 8-Bit Microcontroller 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. Three versions of the derivative exist:

• 83C552—8k bytes mask programmable ROM

• 80C552—ROMless version of the 83C552

• 87C552—8k bytes EPROM

The 87C552 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 87C552 can be expanded using standard TTL

compatible memories and logic.

In addition, the 87C552 has two software selectable modes of power

reduction—idle mode and power-down mode. The idle mode freezes

the CPU while allowing the RAM, timers, serial ports, and interrupt

system to continue functioning. The power-down mode saves the

RAM contents but freezes the oscillator, causing all other chip

functions to be inoperative.

The device also functions as an arithmetic processor having

facilities for both binary and BCD arithmetic plus bit-handling

capabilities. The instruction set consists of over 100 instructions: 49

one-byte, 45 two-byte, and 17 three-byte. With a 16MHz crystal,

58% of the instructions are executed in 0.75µs and 40% in 1.5µs.

Multiply and divide instructions require 3µs.

FEATURES

• 80C51 central processing unit

• 8k × 8 EPROM expandable externally to 64k bytes

• An additional 16-bit timer/counter coupled to four capture registers

and three compare registers

• Two standard 16-bit timer/counters

• 256 × 8 RAM, expandable externally to 64k bytes

• Capable of producing eight synchronized, timed outputs

• A 10-bit ADC with eight multiplexed analog inputs

• Two 8-bit resolution, pulse width modulation outputs

• Five 8-bit I/O ports plus one 8-bit input port shared with analog

inputs

• I2C-bus serial I/O port with byte oriented master and slave

functions

• Full-duplex UART compatible with the standard 80C51

• On-chip watchdog timer

• 16MHz speed

• Extended temperature ranges

• OTP package available

ORDERING INFORMATION

EPROM

TEMPERATURE °C AND PACKAGE

S87C552-4A68

0 to +70, Plastic Leaded Chip Carrier

S87C552-4BA

0 to +70, Plastic Quad Flat Pack

S87C552-5A68

–40 to +85, Plastic Leaded Chip Carrier

NOTE:

1. For ROM and ROMless see data sheet 80C552/83C552

FREQ

MHz

16

16

16

DRAWING NUMBER

SOT188-3

SOT318-2

SOT188-3

1998 May 01

2

853-1690 19336

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