Functions. 32%3 function keys . 13-bit custom codes . Operating supply voltage range VDD = 1.8 to 3.6 V . Supply current at the standby mode IDD = 1 μA or less . Double-press operation keys (no priority given) . On-chip oscillator (ceramic resonator : connected externally)Features. The custom code consists of 7 bits to be fixed by theon-chip ROM and 6 bits being pin-settable. Sixty-fourcustom codes may be selected externally (no diode required). . Minimum number of external parts required
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