The NR8576 Series devices are serial-interface type real-time clock module ICs with built-in crystal

oscillator elements. They feature timer counter circuits that keep track of time from the current second to the current year, automatic leap-year adjustment, and a supply voltage detect function. Also, a 32.768 kHz/1 Hz select output function is incorporated for independent hardware control. They are available in compact 14-pin SOPs (NR8576A×) and miniature 18-pin SOPs (NR8576B×).

FEATURES

■ Crystal oscillator element built-in for adjustment free use

■ Timer counters for second, minute, hour, day, day of the week, month, and year

■ 2.5 to 5.5 V operating voltage range

■ 1.7 ± 0.3 V supply voltage detection threshold

■ 1.0 µA at 3.0 V (typ) current consumption

■ Automatic leap-year calendar adjustment

■ 32.768 kHz and 1 Hz output selectable

■ Package

• 14-pin SOP (NR8576A×)

• 18-pin SOP (NR8576B×)