PCF84C85AT Ver la hoja de datos (PDF) - Philips Electronics
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PCF84C85AT Datasheet PDF : 20 Pages
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Philips Semiconductors
Microcontroller with extended I/O
Product specification
PCF84C85A
1 FEATURES
• 8-bit CPU, ROM, RAM, I/O in a single 40-lead package
• 8 kbytes ROM
• 256 bytes RAM
• I2C-bus interface with multi-master capability
• Over 100 instructions (based on MAB8048)
all of 1 or 2 cycles
• 32 quasi-bidirectional I/O port lines
• 8-bit programmable timer/event counter 1
• Three 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
• Logic supply voltage: VDD = 2.5 to 5.5 V
• Clock frequency: 1 to 16 MHz
• Operating temperature: −40 to +85 °C
• Manufactured in silicon gate CMOS process.
2 GENERAL DESCRIPTION
This data sheet details the specific properties of the
PCF84C85A. The shared properties of the PCF84CxxxA
family of microcontrollers are described in the
“PCD84xxxA family” data sheet which should be read in
conjunction with this publication.
The PCF84C85A is a general purpose CMOS
microcontroller with emphasis on input/output. It provides
32 I/O port lines, 8 kbytes of program memory and
256 bytes of RAM. In addition to the 32 I/O port lines, the
microcontroller provides an on-chip I2C-bus interface. This
two-line serial bus extends the microcontroller's
capabilities when implemented with the powerful I2C-bus
peripherals.These include LCD drivers, telecom circuits,
AD/DA 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
PCF84C85AP
PCF84C85AT
PACKAGE
NAME
DESCRIPTION
DIP40 plastic dual in-line package; 40 leads (600 mil)
VSO40 plastic very small outline package; 40 leads
VERSION
SOT 129-1
SOT 158-1
Note
1. Please refer to the Order Entry Form (OEF) for this device for the full type number to use when ordering. This type
number will also specify the required program and the ROM mask options.
1996 Nov 21
3
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