GENERAL DESCRIPTION
The UT1750AR (figures 1 and 2) is a high performance monolithic CMOS 16-bit RISC microprocessor that supports the complete MIL-STD-1750A Instruction Set Architecture (ISA). Underlying the MIL-STD-1750A support is a high-performance RISC that provides MIL-STD-1750A emulation capability. Developed to provide effective real-time avionics processing, the high performance of the native RISC machine is available to the MIL-STD-1750A systems designer through the MIL-STD-1750A Built-In-Function (BIF) opcode.
The UT1750AR is the first member of a family of high-performance MIL-STD-1750 processors and support peripherals from UTMC.

FEATURES
❐ Operates in either RISC (Reduced Instruction Set Computer) mode or MIL-STD-1750A mode
❐ Supports MIL-STD-1750A 32-bit floating-point operations and 48-bit extended-precision floating-point operations on chip
❐ Built-in 9600 baud UART
❐ Supports defined MIL-STD-1750A Console Mode of Operation
❐ Full 64K-word address space. Expandable to 1M words with optional MMU (operand port)
❐ Register-oriented architecture has 21 user-accessible registers
❐ Registers may be in 16-bit word or 32-bit double-word configurations
❐ Built-in multiprocessor bus arbitration and Direct Memory Access support (DMA)
❐ TTL-compatible I/O
❐ Stable 1.5-micron CMOS technology
❐ Full military operating range, -55°C to +125°C, in accordance with MIL-PRF-38535 for Class Q and V
❐ Typical radiation performance
   - Total dose: 1.0E6 rads(Si)
   - SEL Immune . 100 MeV-cm2/mg
   - LETTH(0.25) = 60 MeV-cm2/mg
   - Saturated Cross Section (cm2) per bit, 1.2E-7
   - 2.3E-11 errors/bit-day, Adams to 90% geosynchronous heavy ion
❐ Standard Military Drawing 5962-01502