FM32L278/L276/L274/L272 - 3V I2C Companion
Pin Configuration
Pin Name
CNT1, CNT2
A0, A1
PFO
Function
Event Counter Inputs
Device Select inputs
Early Power-Fail Output
Reset Input/Output
Early Power-fail Input
Serial Data
VDD
SCL
SDA
NC
1
14
13
CNT1
2
CNT2
/RST
3
12
11
A0
PFI
4
SDA
A1
SCL
Serial Clock
5
10
9
NC
PFO
VBAK
VDD
Battery-Backup Supply
Supply Voltage
Ground
6
PFI
RST
VSS
7
8
VSS
VBAK
Ordering Information
Base Configuration Memory Size Operating Voltage Reset Threshold
Ordering Part Number
FM32L278-G
FM32L278
FM32L276
FM32L274
FM32L272
256Kb
256Kb
64Kb
64Kb
16Kb
16Kb
4Kb
2.7-3.6V
2.7-3.6V
2.7-3.6V
2.7-3.6V
2.7-3.6V
2.7-3.6V
2.7-3.6V
2.7-3.6V
2.6V, 2.9V
2.6V, 2.9V
2.6V, 2.9V
2.6V, 2.9V
2.6V, 2.9V
2.6V, 2.9V
2.6V, 2.9V
2.6V, 2.9V
FM32L278-GTR (tape&reel)
FM32L276-G
FM32L276-GTR (tape&reel)
FM32L274-G
FM32L274-GTR (tape&reel)
FM32L272-G
4Kb
FM32L272-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 ]
