The 8212 I/O port consists of an 8-bit latch with 3-state output buffers along with control and device selection logic. Also included is a service request flip-flop for the generation and control of interrupts to the microprocessor.
Fully parallel 8-bit data register and buffer
Service request flip-flop interrupt generation
Low input load current - 0.25 mA max.
Three state outputs
Outputs sink 15 mA
3.65V output high voltage for direct interface to 8008, 8080A or 8085A CPU
Asynchronous register clear
Replaces buffers, latches and multiplexers in microcomputer systems