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HMN1288DV-85I Datasheet(PDF) 1 Page - Hanbit Electronics Co.,Ltd |
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HMN1288DV-85I Datasheet(HTML) 1 Page - Hanbit Electronics Co.,Ltd |
1 / 9 page HANBit HMN1288DV URL : www.hbe.co.kr 1 HANBit Electronics Co.,Ltd Rev. 1.0 (June, 2004) GENERAL DESCRIPTION The HMN1288DV Nonvolatile SRAM is a 1,048,576 -bit static RAM organized as 131,072 bytes by 8 bits. The HMN1288DV has a self-contained lithium energy source provide reliable non -volatility coupled with the unlimited write cycles of standard SRAM and integral control circuitry, which constantly monitors the single 3.3V, supply for an out- of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on to sustain the memory until after VCC returns valid and write protection is unconditionally enabled to prevent garbled data. In addition the SRAM is unconditionally write -protected to prevent an inadvertent write operation. At this time the integral energy source is switched on to sustain the memory until after VCC returns valid. The HMN1288DV uses extremely low standby current CMOS SRAM ’s, coupled with small lithium coin cells to provide non-volatility without long write-cycle times and the write-cycle limitations associated with EEPROM. FEATURES w Access time : 70, 85, 120, 150 ns w High-density design : 1Mbit Design w Battery internally isolated until power is applied w Industry-standard 32-pin 128K x 8 pinout w Unlimited write cycles w Data retention in the absence of VCC w 10-years minimum data retention in absence of power w Automatic write-protection during power-up/power-down cycles w Data is automatically protected during power loss w Conventional SRAM operation; unlimited write cycles OPTIONS MARKING w Timing 70 ns - 70 85 ns - 85 120 ns -120 150 ns -150 PIN ASSIGNMENT 1 32 12 21 14 19 15 18 10 23 11 22 13 20 2 31 3 30 4 29 6 27 9 24 7 26 5 28 8 25 16 17 A0 A7 A5 A4 A6 A1 A3 A2 A12 A14 A16 NC DQ0 DQ1 DQ2 VSS A11 A8 A9 A10 A13 A15 NC DQ3 DQ4 DQ5 DQ6 DQ7 VCC /CE /WE /OE 32-pin Encapsulated Package Non-Volatile SRAM Module 1Mbit (128K x 8-Bit), 32Pin-DIP, 3.3V Part No. HMN1288DV FinePrint pdfFactory 평가 판 으로 만든 PDFhttp://www.softvision.co.kr |
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