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CPU1 Block Specifications

CPU1 Block Specifications. Description: Primary processing core for bus Handles processing of RF data Receives Inputs from UI and Setup blocks and responds appropriately Performance Requirements: Power Inputs: 3.3 VDC Input Electrical Interfaces: 10 bit Digital Line Interface to RF Block

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CPU1 Block Specifications

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  1. CPU1 Block Specifications • Description: • Primary processing core for bus • Handles processing of RF data • Receives Inputs from UI and Setup blocks and responds appropriately • Performance Requirements: • Power Inputs: • 3.3 VDC Input • Electrical Interfaces: • 10 bit Digital Line Interface to RF Block • 6 bit Digital input from Setup Block • 8 bit Digital I/O with User Interface 1 • Operator Outputs: • Digital signal to LCD display

  2. CPU1 Block Specifications • Standard Requirements: • Environment: • Operating Temperature Range: -40 to 70 °C • Operating Humidity Range: 2 to 98 % • Storage Temperature Range: -30 to 80 °C • Storage Humidity Range: 2 to 98 % • Life Cycle: • Production Life: 5 Years • Full Warranty Period: 1 Year • Service Strategy: Distributor Repair • Mechanical: • Block Mass: .5 Kg • Block PCB area: 60 cm2

  3. CPU1 Block Specifications Internal Block Diagram UI I/O 8 Data Lines U.I.1Block SetupBlock 6 Data Lines AtmelProcessor RF I/O 10 Data Lines RFBlock PowerSupply 5V DC

  4. CPU1 Block Specifications CPU Pin Configurations / Prototype board details CPU AT89S8252 40 PIN DIP TYPE, RUN 18.432 MHz 8 KBYTE PROGRAM MEMORY FLASH IN CPU AT89S8252 2 K BYTE EEPROM DATA IN CPU AT89S8252 32 BIT I/O PORT CPU AT89S8252 I/O 34 PIN ET BUS A/D 12 BIT 2 CH LTC 1298 (OPTION) REAL TIME CLOCK RTC DS1307 (OPTION) 32 KBYTE EEPROM 24LC256 (OPTION) 20 PIN BUS CPU 89C2051/1051/4051 DIP TYPE ... CPU 20 PIN (AT89C1051/2051/4051) 14 PIN LCD PORT (CHARACTER TYPE) RS232 PORT MAX232 ON BOARD ... RS422,RS485,IC 75176 (OPTION) 7805 POWER SUPPLY ON BOARD PCB SIZE 14.5 X 6 CM

  5. CPU1 Block Specifications CP-S8252 V1.0 Development Board Schematic

  6. CPU1 Block: Signal Table Power Digital

  7. CPU1 Block Specifications Passive Discrete Specifications

  8. CPU1 Block Specifications Analog DFM Analysis

  9. CPU1 BlockDigital Block DFM - DC Drive Analysis Table

  10. CPU1 BlockDigital Block DFM - Timing Analysis Table

  11. CPU1 Block Specifications • Prototyping Plan: • Use Atmel ATMega chip as a microprocessor • Use the development board to prototype block • Program system incrementally, testing modular interfaces such as I/O based on temporary mock-ups on a breadboard before item is complete • Costs: • Atmel Board = $38 • Maximum Block Cost = $18 • Maximum Mfg Assembly / Test Cost per Block = $4

  12. CPU1 Block Prototyping Plan

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