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PACE1754

Features: FEATURES` The PACE1754 (PIC) is a support chip for the` PACE1750A/AE Processor. It eliminates the SSI/` MSI Logic and external system functions` r equired in typical 1750A implementations. Provides a significant savings in part-count and power dissipation enhancing reliability and overal...

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SeekIC No. : 004453931 Detail

PACE1754: Features: FEATURES` The PACE1754 (PIC) is a support chip for the` PACE1750A/AE Processor. It eliminates the SSI/` MSI Logic and external system functions` r equired in typical 1750A implementations....

PACE1754 Data Sheet

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Part Number:
PACE1754
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

FEATURES
` The PACE1754 (PIC) is a support chip for the
` PACE1750A/AE Processor. It eliminates the SSI/
` MSI Logic and external system functions
` r  equired in typical 1750A implementations.
  Provides a significant savings in part-count and
  power dissipation enhancing reliability and
  overall system speed performance.
  Provides an optimal interface when used with
  the PACE1753 MMU/COMBO in a full 1750A implementation.
` Provides the following additional important
  system functions:
- Programmable READY for memory and I/O
- Automatic READY during self-test and
  internal I/O instructions
- 100KHz timer clock output provided
- Programmable system watchdog-ranges
  from 1 s to 1 minute
- Programmable Bus time-out function
- Memory Parity generation/detection
- Error detection of unimplemented memory
  and/or I/O space addressing
- First failing memory address register for diagnostics
- High drive three-state address latches
- Built-in system test program-automatically
  tests the PACE1750A/AE CPU, PACE1753
` MMU/COMBO, PACE1754 PIC and system
  address lines as well as memory and I/O strobes
- System configuration decoding and buffering
- Interrupt acknowledge decoder and strobe
- Start up ROM support per MIL-STD-1750A
- Memory or I/O READ/WRITE three-state
  strobes with external three-state control for
` DMA applications
  20, 30 and 40 MHz operation over full Military
` Temperature Range
  Single 5V ± 10% Power Supply
  Power Dissipation over Military Temperature Range
  < 0.25 watts at 20 MHz
  < 0.30 watts at 30 MHz
  < 0.35 watts at 40 MHz
`   Available in:
  - 64-Pin DIP or Gull Wing (50 Mil Pin centers)
  - 68-Pin Pin Grid Array (PGA) (100 Mil centers)
  - 68-Lead Quad Pack


Pinout

Connection Diagram


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
Thermal resistance (JC):4
Cases X and T
Cases Y and U
Case Z		 8°C/W
5°C/W
6°C/W
Notes:
1. Stresses above the absolute maximum rating may cause
permanent damage to the device. Extended operation at the
maximum levels may degrade performance and affect reliability.
2. Must withstand the added power dissipation due to short circuit
test e.g., IOS.
3. Duration 1 second or less.
4. Device Type Definitions from 5962-88642 SMD:
Case X: Dual In-Line
Case T: Dual In-Line with Gull-Wing Leads
Case Y: Leaded Chip Carrier with Gull-Wing Leads
Case U: Leaded Chip Carrier with Unformed Leads
Case Z: Pin Grid Array


Description

The PACE1754 Processor Interface Circuit (PIC) is a single chip implementation of many special system functions that are often required when using the PACE1750A/AE, single chip, 40MHz CMOS Microprocessor. The PIC PACE1754 allows a system designer to design a higher performance, more effecient microprocessor system which uses less power and takes up less board space than was previously possible.

In addition to providing significant savings of PACE1754 in part count and power dissipation the PIC uses only a 5V ±10%, single supply and operates at 20, 30 and 40 MHz over the fully Military Temperature Range. The PIC PACE1754 provides many important system functions. These functions are governed by respective bit positions in a programmable Control Register which is incorporated in the PIC. The individual bits of the control register are set to select the various features and are set to a specified default value upon Reset.




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