˙Only 47 single word instructions
˙5-level deep hardware stack
˙4K x 13 bits on chip EPROM/ROM
˙140 x 8 bits on chip general purpose registers (SRAM)
˙1 8-bit real time clock/counter (Timer0) with
8-bit programmable prescaler
˙3 8-bit real time clock/counter (Timer1, Timer2, and Timer3)
with period setting
˙On chip Watchdog Timer (WDT) with internal oscillator for
reliable operation and soft-ware watch-dog enable/disable control
˙4 I/O ports (38 I/O pins) with independent direction control
˙32 programmable pull-high input pins
˙12 wake-up pins
˙2 open-drain pins
˙2 R-option pins
˙Clock output with high driving ability
˙19 channels of 15-bit resolution Resistor to Frequency
Converter (RFC) output
˙2 channels of maximum 10-bit resolution Pulse Width
Modulation (PWM) output
˙Built-in 8-bit data comparator
˙7 internal interrupt source; 1 external interrupt source
˙Wake-up from SLEEP by port input change
˙Built-in RC oscillator with external resistor
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