FM32278/276/274/272 - 5V I2C Companion

Rev. 3.0

Feb. 2009

Page 2 of 21

Pin Configuration

Pin Name

Function

CNT1, CNT2

Event Counter Inputs

A0, A1

Device Select inputs

PFO

Early Power-Fail Output

/RST

Reset Input/Output

PFI

Early Power-fail Input

SDA

Serial Data

SCL

Serial Clock

VBAK

Battery-Backup Supply

VDD

Supply Voltage

VSS

Ground

Ordering Information

Base Configuration

Memory Size

Operating Voltage

Reset Threshold

Ordering Part Number

FM32278

256Kb

4.0-5.5V

3.9, 4.4V

FM32278-G

256Kb

4.0-5.5V

3.9, 4.4V

FM32278-GTR (tape&reel)

FM32276

64Kb

4.0-5.5V

3.9, 4.4V

FM32276-G

64Kb

4.0-5.5V

3.9, 4.4V

FM32276-GTR (tape&reel)

FM32274

16Kb

4.0-5.5V

3.9, 4.4V

FM32274-G

16Kb

4.0-5.5V

3.9, 4.4V

FM32274-GTR (tape&reel)

FM32272

4Kb

4.0-5.5V

3.9, 4.4V

FM32272-G

4Kb

4.0-5.5V

3.9, 4.4V

FM32272-GTR (tape&reel)

Other memory configurations may be available. Please contact the factory for more information.

VDD

VBAK

SCL

SDA

VSS

NC

NC

PFO

CNT1

PFI

RST

A0

A1

CNT2

1

2

3

4

5

6

7

14

13

12

11

10

9

8