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

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

CPU1 Block Specifications Internal Block Diagram UI I/O 8 Data Lines U.I.1 Block Setup Block 6 Data Lines Atmel Processor RF I/O 10 Data Lines RF Block Power Supply 5V DC

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

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

CPU1 Block: Signal Table Power Digital

CPU1 Block Specifications Passive Discrete Specifications Component Nominal Value Tolerance around nominal Derated Power Capacity Maximum Working Voltage Composition Q – factor (tan δ) Package Capacitor C1 22pF 5% N/A 1KV Ceramic ≥.025 Surface Mount Capacitor C2 Capacitor C3 4.7uF Capacitor C4 10uF Capacitor C5 Capacitor C6 Capacitor C7 Capacitor C8 Capacitor C9 470uF Capacitor C10 .1uF Capacitor C11 Capacitor C12 .625uF Resistor R1 8.2KΩ 10% 2W Resistor R2 .33KΩ Resistor R3 1KΩ Resistor R4 10KΩ Resistor R5 Resistor R6 32.768KΩ Resistor R7 Resistor R8 Resistor R9

CPU1 Block Specifications Analog DFM Analysis Component Fosc Package Crystal Oscillator 18.432MHz Surface Mount Device

CPU1 Block Digital Block DFM - DC Drive Analysis Table Device Output Type Input Type Tech Type DC Drive Device Parameters Vil max Vih min Iil (-) Max Iih Vol Voh Iol Ioh (-) Min Vhyst Checked AT89S8252 Std CMOS .9V 1.9V -50uA N/A .5V 2.4V 1.6mA -.8mA

CPU1 Block Digital Block DFM - Timing Analysis Table Dig Signal Output Type Input Type Timing Parameters Other Tsu Setup Th Thold Marg Fmax F Tpulse Min Checked Digital I/O Std 277ns 0ns 24MHz 20nS

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

CPU1 Block Prototyping Plan Name Block Area (cm2) Total PCB Area (cm2) PCB Substrate Type Comp Attachment Type Socketed Components Types of Connectors CPU 1 121 Plastic pads, no busses Prototype board None 0.25 headers