EF68A21P

Peripheral Interface Adaptateur (PIA)

- 8-Bit Bidirectional Data Bus for communication with the MPU
- Two Bidirectional 8-Bit Buses for Interface to Periphals
- Two Programmable Control Registers
- Two programmable Data Direction Registers
- Four Individualy-Controlled Interrupt Input Lines / Two Usable as Peripheral Control Outputs
- Handshake Control Logic for Input and Output Peripheral Operator

data sheet: EF6821.pdf