INS8212
INS8212 is 8-Bit Input/Output Port manufactured by National Semiconductor.
Description
The INS8212 is an 8-bit input/output port contained in a standard 24-pin dual-in-line package_ The device, which is fabricated using Schottky Bipolar technology, is part of National Semiconductor's INS8080A microprocessor family. The INS8212 can be used to implement latches, gated buffers, or multiplexers. Thus, all of the major peripheral and input/output functions of a microputer system can be implemented with this device.
The INS8212 includes an 8-bit latch with TRI-STATE® output buffers, and device selection and control logic. . Also included is a service request flip-flop for the generation and control of interrupts to the microprocessor.
Features
- 8-Bit Data Latch and Buffer
- Service Request Flip-Flop for Generation and Control of Interrupts.
- 0.25 m A Input Load Current
- TRI-STATE TTLOutplt Drive Capability
- Outputs Sink 15 m A
- Asynchronous Latch Clear
- 3.65V Output f9r Dire.ct Interface to INSS080A
- Reduces System Package Count by Replacing Buffers,
Latches, and Multiplexers in Microputer Systems
- MICROBUSTM- patible
INS8212 MICROBUS Configuration
CPU GROUP
~ 07-00
OOB-OOI
INTR ~ TNT
DIB~DII
~ OS2 l NSB212
Rm'f
OSI STB
CLR MO
ADDRESS
- -,- M
DATA BUS
.B
CONTROL
~
..
.. ..r1.
PERIPHERAL
D7-0B
INTR
- - RESET
~ DIB-DI1 INT ~Os-~Ol CLR...
