Features: ` Implements the MIL-STD-1750A Instruction Set
` Architecture
` ` Single Chip PACE TechnologyTM CMOS 16-Bit
` Processor with 32 and 48-Bit Floating Point
` Arithmetic
` Form-Fit-Functionally Compatible with the P1750A
` DAIS Instruction Mix Execution Performance
` Including Floating Point Arithmetic
1.8 MIPS at 20 MHz
2.7 MIPS at 30 MHz
3.6 MIPS at 40 MHz
` Conventional Integer Processing Mix
Performance
5.0 MIPS at 40 MHz
Power BIF Instructions Allow for High
` Throughput Implementations of Transcedental
` Functions, Navigational Algorithms and DSP
` Functions
Inner Dot Product Instruction for 3X3, 16 Bit
` Registers in 150ns (2 clocks per Multiply/
` Accumulate step) with 32 Bits Result
Multiply/Accumulate Instructions for 32 Bit
` Registers is 200ns at 40MHz (8 clocks), with
48 Bit Result
Parameteric Memory Inner-Dot Products for
` Matrix Computations up to 64K
Fast Polynomial expansion algorithms
Fast context switching with Instruction to
block move up to 16 new mapping memory
page registers
20, 30, and 40 MHz Operation over the Military
` Temperature Range
` Extensive Error and Fault Management and
` Interrupt Capability
26 User Accessible Registers
` Single 5V ± 10% Power Supply
` Power Dissipation over Military Temperature Range
<0.5 watts at 20 & 30 MHz
<1.0 watts at 40 MHz
` TTL Signal Level Compatible Inputs and Outputs
` Multiprocessor and Co-processor Capability
` Two programmable Timers
` Available in:
64-Pin Top Brazed DIP
68-Pin Pin Grid Array (PGA)
68-Lead Quad Pack (Leaded Chip Carrier)Specifications
| Supply Voltage Range |
0.5V to +7.0V |
| Input Voltage Range |
0.5V to VCC + 0.5V |
| Storage Temperature Range |
65°C to +150°C |
| Input Current Range |
30mA to +5mA |
| Current applied to any output3 |
150mA |
| Maximum Power Dissipation2 |
1.5W |
Lead Temperature Range
(soldering 10 seconds) |
300°C |
DescriptionThe PACE1750AE is a general purpose, single chip, 16- bit CMOS microprocessor designed for high performance floating point and integer arithmetic, with extensive real time environment support. It offers a variety of data types, including bits, bytes, 16-bit and 32-bit integers, and 32-bit and 48-bit floating point numbers. PACE1750AE provides 13 addressing modes, including direct, indirect, indexed, based, based indexed and immediate long and short, and PACE1750AE can access 2 MWords of segmented memory space (64 KWords segments).
The PACE1750AE offers a well-rounded instruction set with 130 instruction types, including a comprehensive integer, floating point, integer-to-floating point and floating point-to-integer set, a variety of stack manipulation instructions, high level language support instructions such as Compare Between Bounds and Loop Control Instructions. PACE1750AE also offers some unique instructions such as vectored l/O, supports executive and user modes of PACE1750AE, and provides an escape mechanism which allows user-defined instructions, using a coprocessor.
PACE1750AE includes an array of real time application support resources, such as 2 programmable timers, a complete interrupt controller supporting 16 levels of prioritized internal and external interrupts, and a faults and exceptions handler controlling internally and externally generated faults.
The microprocessor of PACE1750AE achieves very high throughput of 3.6 MIPS for a standard real time integer/floating point instruction mix at a 40 MHz clock. It executes integer Add in 0.1 s, integer Multiply in 0.1 s, Floating Point Add in 0.45 s, and Floating Point Multiply in 0.225 s, for register operands at a 40 MHz clock speed.
The PACE1750AE uses a single multiplexed 16-bit parallel bus. Status signals are provided to determine whether the processor is in the memory or I/O bus cycle, reading and writing, and whether the bus cycle is for data or instructions.
PACE1750AE Data Sheet
