OVERVIEW

The CF5761 series are analog clock ICs with alarm functions that derive their timing from a standard 32.768kHz oscillator element. Two kinds of alarm output are available and can be selected using a control pin. The series lineup comprises devices with various alarm patterns and motor outputs for a wide range of clock specifications. They support convenient functions, such as input chattering elimination circuit and power-on clear functions. They are fabricated using Molybdenum-gate CMOS process, realizing low power consumption.

FEATURES

■ 32.768kHz fundamental frequency oscillator

■ Feedback resistor and oscillator capacitor CD built-in

■ Supports various alarms: piezo-alarm, electromagnetic speaker

■ Snooze function

■ Switchable alarm function using SEL pin

■ Alarm auto-stop function (see series lineup)

■ Input chattering elimination circuit (SEL, AI, SN)

■ Test function

■ 1.2 to 3.6V operating supply voltage

■ Molybdenum-gate CMOS process

■ Chip form (CF5761××)