FM32278/276/274/272 - 5V I2C Companion
Pin Configuration
CNT1
CNT2
A0
A1
PFO
RST
VSS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VDD
SCL
SDA
NC
NC
PFI
VBAK
Pin Name
CNT1, CNT2
A0, A1
PFO
/RST
PFI
SDA
SCL
VBAK
VDD
VSS
Function
Event Counter Inputs
Device Select inputs
Early Power-Fail Output
Reset Input/Output
Early Power-fail Input
Serial Data
Serial Clock
Battery-Backup Supply
Supply Voltage
Ground
Ordering Information
Base Configuration
FM32278
FM32276
FM32274
FM32272
Memory Size
256Kb
256Kb
64Kb
64Kb
16Kb
16Kb
4Kb
4Kb
Operating Voltage
4.0-5.5V
4.0-5.5V
4.0-5.5V
4.0-5.5V
4.0-5.5V
4.0-5.5V
4.0-5.5V
4.0-5.5V
Reset Threshold
3.9, 4.4V
3.9, 4.4V
3.9, 4.4V
3.9, 4.4V
3.9, 4.4V
3.9, 4.4V
3.9, 4.4V
3.9, 4.4V
Ordering Part Number
FM32278-G
FM32278-GTR (tape&reel)
FM32276-G
FM32276-GTR (tape&reel)
FM32274-G
FM32274-GTR (tape&reel)
FM32272-G
FM32272-GTR (tape&reel)
Other memory configurations may be available. Please contact the factory for more information.
Rev. 3.0
Feb. 2009
Page 2 of 21
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
