Key Specifications/Special Features:

rogrammable Counter/Timer:

■ 82C54 or equivalent IC

■ TTL, DTL, CMOS compatibleInput/Output level

■ 3 or 6 channels independent 16-bit counter

■ DC to 10MHz frequency range

■ 6 programmable mode

24 Bits digital I/O lines:

■ Simulate 8255 PPI made 0

■ Power consumption +5v only

■ Buffered circuits for higher driving capacity than 8255

■ Bit 0 of port C can generate an interrupt to IRQ 2,3,4,5,6,7

■ Interrupt triggering rising/falling edge

■ Output status readback

■ Pin compatible with OPTO-22 I/O module racks

■ Transfer rate max 400KB/sec

■ Digital output : Logic level 0 : 0.5V
Logic level 1 : 2.0V
max@24mA min@15mA

■ Digital input: Logic level 0 : 0.8V max
Logic level 1 : 2.0V min