User Manual

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Introduction
1.1 Features
The 7248/96 series products provide the following advanced features:
1.1.1 Digital I/O Ports
z 24/ 48/96 TTL/DTL compatible digital I/O lines
z Emulates industry standard mode 0 of 8255 PPI
z Buffered circuits for higher driving
z Direct interface with OPTO-22 compatible I/O module
z Output status read-back
1.1.2 Timer/Counter and Interrupt System
z A 32 bits timer to generate watchdog timer interrupt
z A 16 bits event counter to generate event interrupt
z Programmable interrupt source
z Dual interrupt system
1.1.3 Miscellaneous
z Provide 12V and 5V power supply on OPTO-22 connectors
z On board resettable fuses to protect power supply for external devices
1.2 Applications
z Programmable mixed digital input & output
z Industrial monitoring and control
z Digital I/O control
z Contact closure, switch/keyboard monitoring
z Connects with OPTO-22 compatible modules
z Useful with A/D and D/A to implement a data acquisition & control
system