MA2910
APRIL 1995
DS3578-2.5
MA2910
RADIATION HARD MICROPROGRAM CONTROLLER
The industry standard MA2910 Microprogram Controller
forms part of the MA2900 family of devices.
Offering a building block approach to microcomputer and
controller design, each device in the range is expandable
permitting efficient emulation of any microcode-controlled
machine. The family has been designed for operation in
severe environments such as space, and is qualified to the
highest levels of reliability.
The MA2910 Micro-program Controller is an address
sequencer intended for sequence control of microinstructions
stored in microprogram memory in high speed micro-
processor applications.
All internal elements are full 12 bits wide and address up to
4096 words with one chip. The device has an integral settable
12 bit internal loop counter for repeating instructions and
counting loop iterations.
The MA2910 has four address sources which allow
Microprogram Address to be selected from the microgram
counter, branch address bus, 9 level push/pop stack, or
internal holding register.
The MA2910 supports 100ns cycle times and has an
integral decoder function to enable external devices onto
branch address bus which eliminates the requirement for an
external decoder.
FEATURES
■ Fully Compatible with Industry Standard 2910A
■ CMOS SOS Technology
■ Radiation Hard and High SEU Immunity
■ High Speed / Low Power
■ Fully TTL Compatible
Figure 1: Block Diagram
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