0.6 ?m CMOS process. 6000 NAND2 gates. passive devices: resistors, capacitors, diodes. standard I/O ports. large-current I/O ports (12-mA source, 40-mA sink) analog blocks: 10-bit ADC. RC oscillator. crystal oscillator (24 MHz, max.) OP amplifiers. comparators. filters. operating voltage range: 2.7 ~ 5.5 volts. operating temperature range: -20 to +75