P83CL781 datasheet(3/76 Pages) PHILIPS

3 / 76 page

1997 Mar 14

Philips Semiconductors

Product speciﬁcation

Low voltage 8-bit microcontrollers with

UART and I2C-bus

P83CL781; P83CL782

FEATURES

• Full static 80C51 CPU

• 8-bit CPU, ROM, RAM, I/O in a 40-lead DIP or 44-lead

QFP package

• 16 kbytes ROM, expandable externally to 64 kbytes

• 256 bytes RAM, expandable externally to 64 kbytes

• Four 8-bit ports, 32 I/O lines

• Three 16-bit timer/event counters

• External memory expandable up to 128 kbytes: RAM up

to 64 kbytes and ROM up to 64 kbytes

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

ceramic resonator

• Fifteen source, fifteen vector interrupt structure with two

priority levels

• Full duplex serial port (UART)

• I2C-bus interface for serial transfer on two lines

• Enhanced architecture with:

– non-page oriented instructions

– direct addressing

– four 8 byte RAM register banks

– stack depth limited only by available internal RAM

(maximum 256 bytes)

– multiply, divide, subtract and compare instructions

• Reduced power consumption through Power-down and

Idle modes

• Wake-up via external interrupts at Port 1

• Single supply voltage of 1.8 to 6.0 V

• Operating ambient temperature:

– 83CL781:

−40 to +85 °C

– 83CL782:

−25 to +55 °C.

• Frequency range of DC to 12 MHz

• Very low current consumption.

GENERAL DESCRIPTION

The term P83CL78x is used throughout this data sheet to

refer to both the P83CL781 and P83CL782; differences

between the devices are highlighted in the text.

The P83CL78x is manufactured in an advanced CMOS

technology. The P83CL78x has the same instruction set

as the 80C51, consisting of over 100 instructions:

49 one-byte, 46 two-byte, and 16 three-byte. The device

has low power consumption and a wide range of supply

voltage; there are two software-selectable modes of

reduced activity for further power reduction: Idle and

Power-down. For emulation purposes, the P85CL781

(piggy-back version) with 256 bytes of RAM is

recommended.

The P83CL782 is a faster version of the P83CL781 and

operates at a maximum frequency of 12 MHz at

VDD ≥ 3.1 V.

This data sheet details the specific properties of the

P83CL78x. For details of the 80C51 core and the I2C-bus

see

“Data Handbook IC20”.

APPLICATIONS

The P83CL78x is an 8-bit general purpose microcontroller

especially suited for cordless telephone applications.

The P83CL78x also functions as an arithmetic processor

having facilities for both binary and BCD arithmetic plus

bit-handling capabilities.

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