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FM31L278-G Datasheet(PDF) 2 Page - Ramtron International Corporation |
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FM31L278-G Datasheet(HTML) 2 Page - Ramtron International Corporation |
2 / 25 page FM31L278/L276/L274/L272 - 3V I2C Companion Rev. 3.0 Feb. 2009 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 FM31L278 256Kb 2.7-3.6V 2.6V, 2.9V FM31L278-G 256Kb 2.7-3.6V 2.6V, 2.9V FM31L278-GTR (tape&reel) FM31L276 64Kb 2.7-3.6V 2.6V, 2.9V FM31L276-G 64Kb 2.7-3.6V 2.6V, 2.9V FM31L276-GTR (tape&reel) FM31L274 16Kb 2.7-3.6V 2.6V, 2.9V FM31L274-G 16Kb 2.7-3.6V 2.6V, 2.9V FM31L274-GTR (tape&reel) FM31L272 4Kb 2.7-3.6V 2.6V, 2.9V FM31L272-G 4Kb 2.7-3.6V 2.6V, 2.9V FM31L272-GTR (tape&reel) 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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