CF5760 series

SEIKO NPC CORPORATION —1

CMOS Analog Clock IC

OVERVIEW

The CF5760 series are analog clock ICs that derive their timing from a 32.768 kHz oscillator element. They

feature a reset function (optional seconds control function) which can be used to maintain accurate time. Vari-

ous alarm functions and motor outputs are available to match a wide range of clock specifications.

FEATURES

I

1.2 to 2.0V operating supply voltage

I

1.2µA (typ) / 1.5V current consumption

I

32.768 kHz oscillator circuit

I

I

Alarm output function

I

Reset function (optional seconds control function)

I

Input chattering elimination function (AI/R)

I

Chip form (CF5760

××)

PAD LAYOUT

(Unit: mm)

SERIES CONFIGURATION

ORDERING INFORMATION

Chip size: 0.76

× 1.21 mm

Chip thickness: 300 ± 30 µm

Pad size: 100

× 100 µm

1

XT

VSS

(0,0)

2

3

45

9

8

7

6

XTN

AON

AO

VDD

O1

AI/R

O2

HA5760

(760, 1210)

CF5760AA

CF5760BA

CF5760CC

CF5760DA

CF5760EA CF5760FC CF5760GB CF5760HA

CF5760JA

Built-in

1. Built-in capacitance includes the parasitic capacitance.

33333

3

27

33

25

25

33

25

25

33

26

25

25

Alarm input/reset input level

HIGH/LOW

HIGH/LOW

LOW/HIGH

LOW/HIGH

–/LOW

LOW/HIGH

LOW/HIGH

LOW/HIGH

LOW/HIGH

Motor output

Active level

LOW

LOW

HIGH

LOW

–

–

HIGH

HIGH

–

Needle period

11111

0.0625

1

1

0.0625

Pulsewidth

23.4

23.4

31.25

27.3

1000

62.5

31.25

46.875

62.5

Alarm output

Pins

AO

AON

AO

AON

AO

AON

AO

AON

AO

AON

AO

AON

AO

AON

AO

AON

AO

AON

Active level

HIGH LOW HIGH

F

(32kHz)

HIGH LOW HIGH

F

(32kHz)

–

–

HIGH LOW HIGH LOW HIGH LOW HIGH

F

(32kHz)

Frequency

44

DC

–

22

DC

–

––222222

DC

–

Modulation

8

8

–

–

8 + 1

8 + 1

–

–

–

–

8 + 1

8 + 1

8 + 1

8 + 1

8 + 1

8 + 1

–

–

900

900

900

10

900

900

900

10

–

–

900

900

900

900

900

900

900

10

900

900

10

10

900

900

10

10

–

–

900

900

10

10

900

900

10

10

Device

Package

CF5760

××

Chip form