Item Tag: Z8420BB1
2 posts
Lot of Vtg (1988) PIO (Parallel Input/Output) Controllers (10), SGS (#Z8420BB1)
The SGS Z8420BB1 PIO Parallel I/O Circuit is a programmable, dual-port device that provides a TTL-compatible interface between peripheral devices and the Z80 CPU. Thus, the interrupt logic of the PIO permits full use of the efficient interrupt capabilities of the Z80 CPU during I/O transfers.
July 5, 2026
2 pieces Z8420BB1 Z80B PIO Controller DIP40 6MHz Z8420 NEW ~
2 pieces Z8420BB1. The Z8440 is full compatible to each Z8420 in DIP40 of other manufactures like ZILOG Z08420. The Z80 PIO Parallel I/O Circuit is a programmable, dual-port device that provides a TTL-compatible interface between peripheral devices and the Z80 CPU.
July 4, 2026