Radiation hard Programmable Communication Interface

The MA28151 is based on the industry standard 8251A Universal Synchronous Asynchronous Receiver/Transmitter (USART), modified for data communications with the MAS281 microprocessor.
The MA28151 is used as a peripheral device and is programmed by the CPU to operate using virtually any serial data transmission technique presently in use (including IBM “bi-sync”). The USART accepts data characters from the CPU in parallel format and then converts them into a continuous serial data stream for transmission.

FEATURES
■ Radiation Hard to 1MRad(Si)
■ Latch Up Free, High SEU Immunity
■ Silicon-on-Sapphire Technology
■ Synchronous 5 - 8 Bit Characters; Internal or External Character Synchronisation; Automatic Sync Insertion
■ Asynchronous 5 - 8 Bit Characters; Clock Rate - 1, 16 or 64 Times Baud Rate; Break Character Generation, 1 1⁄2 or 2 Stop Bits
■ All Inputs and Outputs are TTL Compatible
■ Compatible with the MAS281 (MIL-STD-1750A) Microprocessor