Page 105 - PDA Robotics Using Your Personal Digital Assistant to Control Your Robot

PDA 05 5/30/03 11:35 AM Page 81
Chapter 5 / The Electronics
•
Single 5V in-circuit serial programming capability
• In-circuit serial programming (ICSP) via two pins
• In-circuit debugging via two pins
• Processor read/write access to program memory
• Wide operating voltage range: 2.0 V to 5.5 V

• High sink/source current: 25 mA
• Commercial, industrial, and extended temperature ranges

• Low power consumption:
– < 0.6 mA typical @ 3V, 4 MHz

– 20 µA typical @ 3V, 32 kHz
– < 1 µA typical standby current peripheral features:
• Timer0: 8-bit timer/counter with 8-bit prescaler

• Timer1: 16-bit timer/counter with prescaler, can be incremented
during SLEEP via external crystal/clock
• Timer2: 8-bit timer/counter with 8-bit period register, prescaler,
and postscaler
• Two capture, compare, PWM modules

– Capture is 16-bit; max. resolution is 12.5 ns
– Compare is 16-bit; max. resolution is 200 ns

– PWM max. resolution is 10-bit
• 10-bit multi-channel analog-to-digital converter

• Synchronous serial port (SSP) with SPI (master mode) and I to
the power of 2 C (master/slave)

• Universal synchronous asynchronous receiver transmitter
(USART/SCI) with 9-bit address detection

• Parallel slave port (PSP) 8 bits wide, with external RD, WR, and
CS controls (40/44-pin only)
• Brown-out detection circuitry for brown-out reset (BOR)
Figure 5.31 shows the pin layout of the chip.

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