DESCRIPTION

The ETL9444/L9445 and ETL9344/L9345 SingleChip N-Channel Microcontrollers are fully compatible with the COPS? family, fabricated using N-channel, silicon gate XMOS technology. They are complete microcomputers containing all system timing, internal logic, ROM, RAM and I/O necessary to implement dedicated control functions in a variety of applications.

■ LOW COST

■ POWERFUL INSTRUCTION SET

■ 2k x 8 ROM, 128 x 4 RAM

■ 23 I/O LINES (ETL9444)

■ TRUE VECTORED INTERRUPT, PLUS RESTART

■ THREE-LEVEL SUBROUTINE STACK

■ 16μs INSTRUCTION TIME

■ SINGLE SUPPLY OPERATION (4.5-6.3V)

■ LOW CURRENT DRAIN (13mA max.)

■ INTERNAL TIME-BASE COUNTER FORREALTIME PROCESSING

■ INTERNAL BINARY COUNTER REGISTER WITH MICROWIRE? SERIAL I/O CAPABILITY

■ GENERAL PURPOSE AND TRI-STATE? OUTPUTS

■ LSTTL/CMOS COMPATIBLE IN AND OUT

■ DIRECT DRIVEOF LEDDIGIT AND SEGMENT LINES

■ SOFTWARE/HARDWARE COMPATIBLE WITH OTHER MEMBERS OF ET9400 FAMILY

■ EXTENDED TEMPERATURE RANGE DEVICES ETL9344/L9345 (– 40°C to + 85°C)

■ WIDER SUPPLY RANGE (4.5 – 9.5V) OPTIONALLY AVAILABLE

■ SOIC 24/28 AND PLCC 28 PACKAGES AVAILABLE