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FM31256 Arkusz danych(PDF) 2 Page - Ramtron International Corporation |
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FM31256 Arkusz danych(HTML) 2 Page - Ramtron International Corporation |
2 / 26 page FM3104/16/64/256 Rev. 2.1 Sept. 2011 Page 2 of 26 A general-purpose comparator compares an external input pin to the onboard 1.2V reference. This is useful for generating a power-fail interrupt (NMI) but can be used for any purpose. The family also includes a programmable 64-bit serial number that can be locked making it unalterable. Additionally it offers a dual battery-backed event counter that tracks the number of rising or falling edges detected on dedicated input pins. 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 FM31256 256Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM31256-G 256Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM31256-GTR (tape&reel) FM3164 64Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM3164-G 64Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM3164-GTR (tape&reel) FM3116 * 16Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM3116-G 16Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM3116-GTR (tape&reel) FM3104 * 4Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM3104-G 4Kb 2.7-5.5V 2.6V, 2.9, 3.9, 4.4V FM3104-GTR (tape&reel) * The FM3116 and FM3104 devices are EOL as of Sept. 2011. 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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Podobny opis - FM31256 |
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