Part Number: D71055C
Function: Low-power CMOS programmable Parallel Interface Unit
Package: 40 Pin DIP
Manufacturer: NEC Electronics
The D17055C is a low-power CMOS programmable parallel interface unit for use in microcomputer systems. Typically, the unit’s three I/O ports interface peripheral devices to the system bus.
Pinout

Features
1. Three 8-bit I/O ports
2. Three programmable operation modes
3. Bit manipulation command
4. Microcomputer compatible
5. CMOS technology
6. Industrial temperture range : -40 ~ +85’C
7. 8 MHZ and 10 MHZ