80CL31 datasheet(2/40 Pages) PHILIPS

2 / 40 page

Philips Semiconductors

Product specification

80CL31/80CL51

Low-voltage single-chip 8-bit microcontrollers

January 1995

FEATURES

• Full static 80C51 CPU

• 8-bit CPU, ROM, RAM, 1/0 in a single 40-lead DIL / mini-pack

• 4K x 8 ROM, expandable externally to 64K bytes

• 128 bytes RAM, expandable externally to 64K bytes

• Four 8-bit ports, 321/0 lines

• Two 16-bit timer / event counters

• External memory expandable up to 128K, external ROM up to

64K and / or RAM up to 64K

• On-chip oscillator suitable for RC, LC, quartz crystal or ceramic

resonator

• Thirteen source, thirteen vector interrupt structure with two priority

levels

• Full duplex serial port (UART)

• Enhanced architecture with:

– non-page oriented instructions

– direct addressing

– four eight byte RAM register banks

– stack depth up to 128 bytes

– multiply, divide, subtract and compare instructions

• Power-Down and IDLE instructions

• Wake-up via external interrupts at Port 1

• Single supply voltage of 1.8V to 6.0V (5.0V ±10% for P80C51)

• Frequency range of 0 to 16MHz (3.5MHz to 16MHz for P80C51)

• Very low current consumption

• Operating temperature range: -40 to +85oC

DESCRIPTION

The 80CL51 is manufactured in an advanced CMOS technology.

The instruction set of the 80CL51 is based on that of the 8051. The

80CL51 is a general purpose microcontroller especially suited for

battery-powered applications. The device has low power

consumption and a wide range of supply voltage. For emulation

purposes, the 85CL000 (Piggy-back version) with 256 bytes of RAM

is recommended. The 80CL51 has two software selectable modes

of reduced activity for further power reduction: Idle and Power-down.

The 80CL51 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, 46 two-byte, and 16 three-byte.

The P80CL31 is the ROMless version of the P80CL51. P80C51 is a

5V version of the low voltage P80CL51.

The P80CL31 is the ROMless version of the P80CL51. P80C51 is a

5V version of the low voltage P80CL51.

PIN CONFIGURATIONS

PLASTIC QUAD FLAT PACKAGE

39 38 37 36 35 34

12 13 14 15 16 17 18 19 20

P1.5/INT7

P1.6/INT8

P1.7/INT9

RST

P3.0/RXD

P3.1/TXD

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

P0.4/AD4

P0.5/AD5

P0.6/AD6

P0.7/AD7

ALE

PSEN

P2.7/A15

P2.6/A14

P2.5/A13

INT2/P1.0

RST

RXD/DATA/P3.0

TXD/CLOCK/P3.1

INT0/P3.2

INT1/P3.3

T0/P3.4

T1/P3.5

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

P0.7/AD7

P0.6/AD6

P0.5/AD5

P0.4/AD4

P0.3/AD3

P0.2/AD2

P0.1/AD1

P0.0/AD0

VDD

PLASTIC

DUAL

IN-LINE

AND

SMALL

OUTLINE

PACKAGES

INT3/P1.1

INT4/P1.2

INT5/P1.3

INT6/P1.4

INT7/P1.5

INT8/P1.6

INT9/P1.7

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