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FM31276-G Datasheet(PDF) 2 Page - Ramtron International Corporation

Part No. FM31276-G
Description  5V Integrated Processor Companion with Memory
Download  25 Pages
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Maker  RAMTRON [Ramtron International Corporation]
Homepage  http://www.ramtron.com
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 2 page
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FM31278/276/274/272 - 5V I2C Companion
Rev. 2.0
Dec. 2007
Page 2 of 25
Pin Configuration
Pin Name
Function
CNT1, CNT2
Event Counter Inputs
A0, A1
Device Select inputs
CAL/PFO
Clock Calibration and Early
Power-Fail Output
/RST
Reset Input/Output
PFI
Early Power-fail Input
X1, X2
Crystal Connections
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
FM31278
256Kb
4.0-5.5V
3.9, 4.4V
FM31278-G
FM31276
64Kb
4.0-5.5V
3.9, 4.4V
FM31276-G
FM31274
16Kb
4.0-5.5V
3.9, 4.4V
FM31274-G
FM31272
4Kb
4.0-5.5V
3.9, 4.4V
FM31272-G
Other memory configurations may be available. Please contact the factory for more information.
VDD
VBAK
SCL
SDA
VSS
X1
X2
CAL/PFO
CNT1
PFI
RST
A0
A1
CNT2
1
2
3
4
5
6
7
14
13
12
11
10
9
8




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