˙Only 49 single word instructions
˙5-level deep hardware stack
˙4K x 13 bits on chip EPROM/ROM
˙144 x 8 bits on chip general purpose registers (SRAM)
˙1 8-bit real time clock/counter with 8-bit programmable prescaler
˙1 8-bit real time clock/counter with 2-bit programmable prescaler
and period setting
˙On chip Watchdog Timer (WDT) with internal oscillator for
reliable operation and soft-ware watch-dog enable/disable control
˙3 I/O ports with independent direction control
˙16 soft-ware control pull-high pins
˙8 soft-ware control pull-down pins
˙2 soft-ware control open-drain pins
˙1 IR output channel with programmable frequency and duty cycle
˙Serial Peripheral Interface (SPI)
˙4 internal interrupt source; 2 external interrupt source
˙Wake-up from SLEEP mode
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