CF5707CG

SEIKO NPC CORPORATION —1

Analog Watch Stepping Motor Driver

OVERVIEW

The CF5707CG is a 32.768kHz reference frequency crystal oscillator CMOS LSI for stepping motor drives in

low-current consumption analog watches.

FEATURES

I

32.768kHz crystal oscillator circuit

I

−1.2 to −2.0V operating supply voltage range

I

150nA (typ) to 250nA (max) operating current

consumption

I

Reset function

• Reset in 4Hz frequency steps

ORDERING INFORMATION

PAD LAYOUT

(Top view)

Device

Package

CF5707CG

Chip form

Chip size: 830

× 970µm

Chip thickness: 220

± 30µm

Pad size: 98

× 98µm

(0,0)

(830,970)

7

8

1

2

3

4

5

6

VSS

TEST

XTN

XT

RESET

OUT1

OUT2

VDD