SC87C51APF40 datasheet(2/30 Pages) PHILIPS

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Philips Semiconductors

Product specification

80C31/80C51/87C51

CMOS single-chip 8-bit microcontrollers

1996 Aug 16

853–0169 17187

DESCRIPTION

The Philips 80C31/80C51/87C51 is a high-performance

microcontroller fabricated with Philips high-density CMOS

technology. The CMOS 8XC51 is functionally compatible with the

NMOS 8031/8051 microcontrollers. The Philips CMOS technology

combines the high speed and density characteristics of HMOS with

the low power attributes of CMOS. Philips epitaxial substrate

minimizes latch-up sensitivity.

The 8XC51 contains a 4k

× 8 ROM (80C51) EPROM (87C51), a 128

× 8 RAM, 32 I/O lines, two 16-bit counter/timers, a five-source,

two-priority level nested interrupt structure, a serial I/O port for either

multi-processor communications, I/O expansion or full duplex UART,

and on-chip oscillator and clock circuits.

In addition, the device 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 port, 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.

FEATURES

• 8031/8051 compatible

– 4k

× 8 ROM (80C51)

– 4k

× 8 EPROM (87C51)

– ROMless (80C31)

– 128

× 8 RAM

– Two 16-bit counter/timers

– Full duplex serial channel

– Boolean processor

• Memory addressing capability

– 64k ROM and 64k RAM

• Power control modes:

– Idle mode

– Power-down mode

• CMOS and TTL compatible

• Five speed ranges at V

CC = 5V

– 12MHz

– 16MHz

– 24MHz

– 33MHz

• Five package styles

• Extended temperature ranges

• OTP package available

PIN CONFIGURATIONS

P1.0

P1.1

P1.2

P1.3

P1.4

P1.5

P1.6

RST

RxD/P3.0

TxD/P3.1

INT0/P3.2

INT1/P3.3

T0/P3.4

T1/P3.5

P1.7

WR/P3.6

RD/P3.7

XTAL2

XTAL1

VSS

P2.0/A8

P2.1/A9

P2.2/A10

P2.3/A11

P2.4/A12

P2.5/A13

P2.6/A14

P2.7/A15

PSEN

ALE/PROG

EA/VPP

P0.7/AD7

P0.6/AD6

P0.5/AD5

P0.4/AD4

P0.3/AD3

P0.2/AD2

P0.1/AD1

P0.0/AD0

VCC

CERAMIC

AND

PLASTIC

DUAL

IN-LINE

PACKAGE

CERAMIC

AND

PLASTIC

LEAD

CHIP

CARRIER

PLASTIC

QUAD

FLAT

PACK

SU00001

SEE PAGE 3 FOR QFP AND LCC PIN FUNCTIONS.

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