Bult-in 32.768 kHz
crystral oscillator with high accuracy.(Ta=+25
5x10
-6
)
Serial interface which can be controlled by four signal lines.
CPU interrupt generation function (cycle time range : 1 month to 0.5
seconds,
includes interrupt flags and interrupt stop function)
Dual Alarm and Timer IRQ function are Available.
32.768 kHz clock frequency output. (Nch open drain)
Power supply voltage monitoring function (with selectable detection
threshold)
Wide operating voltage range : 1.7 V to 5.5 V
Wide timekeeper voltage range : 1.15 V to 5.5 V
Low backup current : 0.48
A
/ 3 V (Typ.)
Oscillation stop detection function (used to determine presence of
internal data)
