CF5761 series

SEIKO NPC CORPORATION —1

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

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32.768kHz fundamental frequency oscillator

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built-in

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Supports various alarms: piezo-alarm, electromag-

netic speaker

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Snooze function

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Switchable alarm function using SEL pin

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Alarm auto-stop function (see series lineup)

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Input chattering elimination circuit (SEL, AI, SN)

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Test function

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1.2 to 3.6V operating supply voltage

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Molybdenum-gate CMOS process

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Chip form (CF5761

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PAD LAYOUT

(Unit:

µm)

ORDERING INFORMATION

Chip size: 1.41

× 1.37mm

Chip thickness: 300 ± 30µm

Pad size: 100

× 100µm

(0,0)

(1410, 1370)

HA5761

XTN

AO1

NPC

AO3 SEL

AO2

VSS

O2

O1

XT

SN

AI

TI

VDD

1

2

3

4

56

7

8

10

9

11

12

13

Device

Package

CF5761

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Chip form