Microcontrollers-What's Out There

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