PCF84C81A Datasheet, PDF (3/20 Pages) NXP Semiconductors – Telecom microcontroller

Philips Semiconductors
Telecom microcontroller
Product specification
PCF84C81A
1 FEATURES
• Manufactured in silicon gate CMOS process
• 8-bit CPU, ROM, RAM, I/O in a 28-lead package
• 8 kbyte ROM, 256 byte RAM (PCF84C81A)
• I²C-bus interface with multi-master capability
• Over 100 instructions (based on MAB8048) all of
1 or 2 cycles
• 20 quasi-bidirectional I/O Port lines
• High sink current capability on the 8 lines of Port 1
• 8-bit programmable timer/event counter 1
• 3 single-level vectored interrupts:
– external
– 8-bit programmable timer/event counter 1
– I²C-bus
• 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
PCF84C81A. 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.
The PCF84C81A is a general purpose CMOS
microcontroller with 8 kbytes of program memory and
256 bytes of RAM. In addition to 20 I/O port lines, the
microcontrollers provide an on-chip I²C-bus interface. This
two-line serial bus extends the microcontroller capabilities
when implemented with the powerful I²C-bus peripherals.
These include LCD drivers, I/O expanders, telecom
circuits, ADC and DAC converters, clock/calendar circuits,
EEPROM and RAM and are listed in “Data Handbook
IC12, I²C Peripherals”.
The instruction set is based on that of the MAB8048 and
is a sub-set of that listed in the “PCF84CxxxA family” data
sheet.
3 ORDERING INFORMATION (see note 1)
TYPE NUMBER
PCF84C81AP
PCF84C81AT
NAME
DIP28
SO28
PACKAGE
DESCRIPTION
plastic dual in-line package; 28 leads (600 mil)
plastic small outline package; 28 leads; body width 7.5 mm
VERSION
SOT117-1
SOT136-1
Note
1. Please refer to the Order Entry Form (OEF) for the full type number to use when ordering. This type number will also
specify the required program and the ROM mask options.
1998 Apr 20
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