IA2910A-PDW40C Datasheet - InnovASIC, Inc

The IA2910A is a form, fit and function compatible part to the AMD 2910A microprogram controller. The IA2910A is an address controller which will sequence through a series of microinstructions contained in a ROM or PROM. There are four sources of addresses from which the IA2910A may select. The first is a direct data bus (DIN) input, which is straightforward. The second is an internal address register. This register contains data loaded during a previous microinstruction.

FEATURES
• Form, Fit, and Function Compatible with the AMD™ Am2910A
• Packaging options available: 40 Pin Plastic or Ceramic DIP, 44 Pin Plastic Leaded Chip Carrier
• Twelve Bits Wide
• Internal Loop Counter
• Four Address Sources
    - push/pop stack counter
    - internal holding register
    - microprogram counter
    - branch address bus
• 9 Word Deep Stack Register
    - push/pop control for nesting subroutines
• 16 Sequence Control Microinstructions
• Output Enable controls 3 Branch Address Sources