Overview
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-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. 3 ORDERING INFORMATION (see note 1) This data sheet details the specific properties of the PCF84C21A, PCF84C41A and PCF84C81A. The shared properties of the PCF84.
