1996 Nov 20

3

Philips Semiconductors

Product specification

8-bit microcontrollers

PCF84C12A; PCF84C22A;

PCF84C42A

1

FEATURES

• Manufactured in silicon gate CMOS process

• 8-bit CPU, ROM, RAM, I/O in a 20-lead package

• 1 kbyte ROM (PCF84C12A)

• 2 kbyte ROM (PCF84C22A)

• 4 kbyte ROM (PCF84C42A)

• 64 byte RAM

• Over 100 instructions (based on MAB8048) all of

1 or 2 cycles

• 13 quasi-bidirectional I/O port lines

• 8-bit programmable timer/event counter 1

• Two single-level vectored interrupts:

– external

– 8-bit programmable timer/event counter 1

• Two test inputs, one of which also serves as the external

interrupt input

• Stop and Idle modes

• Supply voltage: 2.5 to 5.5 V

• Clock frequency: 1 to 16 MHz

• Operating temperature: −40 to +85 °C.

2

GENERAL DESCRIPTION

This data sheet details the specific properties of the

PCF84C12A, PCF84C22A and PCF84C42A. The shared

properties of the PCF84CxxxA family of microcontrollers

are described in the

“PCF84CxxxA family” data sheet,

which should be read in conjunction with this publication.

Note that the devices described in this data sheet do not

information given in the family data sheet about these

features can be ignored.

The PCF84C12A, PCF84C22A and PCF84C42A are

general purpose CMOS microcontrollers with 1 kbyte,

2 kbytes and 4 kbytes of program memory, respectively.

They include 64 bytes of RAM and 13 I/O port lines.

The instruction set is based on the MAB8048 and is a

sub-set of that listed in the

“PCF84CxxxA family” data

sheet.

3

ORDERING INFORMATION (see note 1)

Note

1. Please refer to the Order Entry Form (OEF) for these devices for the full type number to use when ordering. This type

number will also specify the required program and ROM mask options.

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF84C12AP

DIP20

plastic dual in-line package; 20 leads (300 mil)

SOT146-1

PCF84C22AP

PCF84C42AP

PCF84C12AT

SO20

plastic small outline package; 20 leads; body width 7.5 mm

SOT163-1

PCF84C22AT

PCF84C42AT