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CF5761MB

CMOS Analog Clock IC with Alarm Function

Nippon Precision Circuits  

CF5761 series

CMOS Analog Clock IC with Alarm Function

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 consump-

tion.

FEATURES

I 32.768kHz fundamental frequency oscillator

I Feedback resistor and oscillator capacitor CD

built-in

I Supports various alarms: piezo-alarm, electromag-

netic speaker

I Snooze function

I Switchable alarm function using SEL pin

I Alarm auto-stop function (see series lineup)

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

I Test function

I 1.2 to 3.6V operating supply voltage

I Molybdenum-gate CMOS process

I Chip form (CF5761××)

PAD LAYOUT

(Unit: µm)

O1 1

O2 2

VSS 3

AO2 4

NPC

56 7

(0,0) AO1 AO3 SEL

VDD TI (1410, 1370)

13 12

HA5761

11 AI

10 SN

9 XT

8 XTN

Chip size: 1.41 × 1.37mm

Chip thickness: 300 ± 30µm

Pad size: 100 × 100µm

Reverse side: VDD level

ORDERING INFORMATION

Device

CF5761 ××

Package

Chip form

SEIKO NPC CORPORATION —1

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