The MA17503 Interrupt Unit is a component of the MAS281 chip set. Other chips in the set include MA17501 Execution Unit and the MA17502 Control Unit. Also available is the peripheral MA31751 Memory Management/Block Protection Unit. The lnterrupt Unit, in conjunction with these additional chips, implements the full MIL-STD-1750A Instruction Set Architecture.

FEATURES

■ Mil-Std-1750A Instruction Set Architecture

■ Full Performance over Military Temperature Range (-55°C to +125°C)

■ Radiation Hard CMOS/SOS Technology

■ Interrupt Handler

• 9 User Interrupt Inputs

• Pending Interrupt Register

• Interrupt Mask Register

• Interrupt Priority Encoder

■ Fault Handler

• 8 User Faults Inputs

• Fault Register

■ Timers

• Timer A

• Timer B

■ Trigger-Go

■ DMA Interface

■ Interface Discretes

• Normal Power-Up

• Start-Up ROM Enable

• Configuration Word Enable

■ Implements 26 MIL-STD-1750A Specified l/O Commands

■ MAS281 Integrated Built-ln Self Test

■ TTL Compatible System Interface