PCF84C21A

INTEGRATED CIRCUITS DATA SHEET PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers Product specification Supersedes data of 1995 Jul 14 File under Integrated Circuits, IC14 1996 Nov 20 Philips Semiconductors Product specification Telecom microcontrollers CONTENTS 1 2 3 4 5 5.1 5.2 6 7 8 9 10 11 12 13 14 14.1 14.2 14.2.1 14.2.2 14.3 14.3.1 14.3.2 14.3.3 15 16 17 FEATURES GENERAL DESCRIPTION ORDERING INFORMATION BLOCK DIAGRAM PINNING INFORMATION Pinning Pin description INSTRUCTION SET HIGH SINK OUTPUT CURRENTS ROM MASK OPTIONS HANDLING LIMITING VALUES DC CHARACTERISTICS AC CHARACTERISTICS PACKAGE OUTLINES SOLDERING Introduction DIP Soldering by dipping or by wave Repairing soldered joints SO Reflow soldering Wave soldering Repairing soldered joints DEFINITIONS LIFE SUPPORT APPLICATIONS PURCHASE OF PHILIPS I2C COMPONENTS PCF84C21A; PCF84C41A; PCF84C81A 1996 Nov 20 2 Philips Semiconductors Product specification Telecom microcontrollers 1 FEATURES 2 PCF84C21A; PCF84C41A; PCF84C81A GENERAL DESCRIPTION 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) 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-...