Microcontrollers-What's Out There

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Contents

Families of Microcontrollers

PIC

  • Excellent general purpose chips
  • 18 - 28 pin packages (down to 8) with 14-22 I/O
  • ADC available, usually 4 channels, 8 bits
  • Max. 5 MIPS
  • Hardware UART on heavier chips
  • No external addressing

SH1 - Hitachi SH Family

  • Speed (20 MIPS)
  • Bits (32)
  • RAM (8K)
  • 16 bit timers (5)
  • Interrupts (40)
  • Power drain (100 mA)
  • Pins to solder (100)

ADuC812

  • Good for data collection, smart sensor type application
  • Fast (5 us) 8 channel, 12 bit ADC
  • Hardware UART
  • Flash
  • CISC
  • 1.25 MIPS max

68HC11

  • 8 channel, 8 bit ADC
  • 20K program, 1K RAM
  • 5 16-bit timers
  • 38 I/O pins
  • UART
  • 24 bit external memory space
  • But: 3 MHz clock



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