PCF84C21A Philips Semiconductors, PCF84C21A Datasheet - Page 3

• Manufacturer Part Number: PCF84C21A
• Description: Telecom microcontrollers
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1
3
Note
1. Please refer to the Order Entry Form (OEF) for these devices for the full type number to use when ordering. This type
1996 Nov 20
Manufactured in silicon gate CMOS process
8-bit CPU, ROM, RAM, I/O in a 28-lead package
2 kbyte ROM, 64 byte RAM (PCF84C21A)
4 kbyte ROM, 128 byte RAM (PCF84C41A)
8 kbyte ROM, 256 byte RAM (PCF84C81A)
I
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
– I
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.
Telecom microcontrollers
2
TYPE NUMBER
C-bus interface with multi-master capability
number will also specify the required program and the ROM mask options.
FEATURES
ORDERING INFORMATION (see note 1)
PCF84C21AP
PCF84C41AP
PCF84C81AP
PCF84C21AT
PCF84C41AT
PCF84C81AT
2
C-bus
NAME
DIP28
SO28
plastic dual in-line package; 28 leads (600 mil)
plastic small outline package; 28 leads; body width 7.5 mm
3
2
This data sheet details the specific properties of the
PCF84C21A, PCF84C41A and 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 PCF84C21A, PCF84C41A and PCF84C81A are
general purpose CMOS microcontrollers with 2 kbytes,
4 kbytes and 8 kbytes of program memory and 64,128 and
256 bytes of RAM, respectively. In addition to 20 I/O port
lines, the microcontrollers provide an on-chip I
interface. This two-line serial bus extends the
microcontroller capabilities when implemented with the
powerful I
I/O expanders, telecom circuits, ADC and DAC converters,
clock/calendar circuits, EEPROM and RAM and are listed
in “Data Handbook IC12, I
is a sub-set of that listed in the “PCF84CxxxA family” data
sheet.
The instruction set is based on that of the MAB8048 and
DESCRIPTION
GENERAL DESCRIPTION
PACKAGE
2
C-bus peripherals. These include LCD drivers,
PCF84C21A; PCF84C41A;
2
C Peripherals”.
PCF84C81A
Product specification
SOT117-1
SOT136-1
VERSION
2
C-bus