Features

The PET-48DIO is a 48-CH high-density parallel digital I/O board for ISA bus.

This board provides 2 sets of 24-CH I/O interface.

Every 24-CH interface emulates mode 0 of the industry standard 8255 Programmable Peripheral Interface (PPI) chips, each offers three 8-bit ports: PA, PB, and PC. PC is subdivided into 2 nibble-wide (4-bit) ports.

Each PPI channel has an individual connector with OPTO-22 pin assignment.

Spécifications

48-CH digital inputs/outputs with a timer
TTL/DTL compatible digital I/O channels
Direct interface with OPTO-22 compatible I/O modules
Emulates industry standard 8255 PPI (mode 0)
Buffered circuits for high driving capacity
Output status read back
Programmable interrupt handling