MAS17503LE 查看數據表（PDF） - Dynex Semiconductor

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MAS17503LE

Radiation Hard MIL-STD-1750A Interrupt Unit

Dynex Semiconductor 

Replaces June 1999 version, DS3566-4.0

MAM1A715750033

Radiation Hard MIL-STD-1750A Interrupt Unit

DS3566-5.0 January 2000

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.

The MA17503 - consisting of the Pending Interrupt

Register, Mask Register, Interrupt Priority Encoder, Fault

Register, Timer A, Timer B, Trigger-Go Counter, Bus Fault

Timer, and DMA interface - handles all interrupt fault, and DMA

interfacing, in addition to providing all three hardware timers.

The Interrupt Unit also implements 26 of the MIL-STD-1750A

specified l/O commands. Table 1 provides brief signal

definitions.

The MA17503 is offered in dual-in-line, flatpack or leadless

chip carrier packaging. Screening and packaging options are

described at the end of this document.

BLOCK DIAGRAM

FEATURES

s Mil-Std-1750A Instruction Set Architecture

s Full Performance over Military Temperature Range (-55°C

to +125°C)

s Radiation Hard CMOS/SOS Technology

s Interrupt Handler

• 9 User Interrupt Inputs

• Pending Interrupt Register

• Interrupt Mask Register

• Interrupt Priority Encoder

s Fault Handler

• 8 User Faults Inputs

• Fault Register

s Timers

• Timer A

• Timer B

s Trigger-Go

s DMA Interface

s Interface Discretes

• Normal Power-Up

• Start-Up ROM Enable

• Configuration Word Enable

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

s MAS281 Integrated Built-ln Self Test

s TTL Compatible System Interface

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