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HMN1M8DVN-85 Datasheet(PDF) 1 Page - Hanbit Electronics Co.,Ltd |
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HMN1M8DVN-85 Datasheet(HTML) 1 Page - Hanbit Electronics Co.,Ltd |
1 / 9 page HANBit HMN1M8DVN URL:www.hbe.co.kr 1 HANBit Electronics Co.,Ltd Rev.0.0 (January/ 2003) GENERAL DESCRIPTION The HMN1M8DVN Nonvolatile SRAM is a 8,388,608-bit static RAM organized as 1,048,576 bytes by 8 bits. The HMN1M8DVN 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 HMN1M8DVN 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 : 8Mbit Design w Battery internally isolated until power is applied w Industry-standard 40-pin 1,024K x 8 pinout w Unlimited write cycles w Data retention in the absence of V CC 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 OPTIONS MARKING w Timing 70 ns - 70 85 ns - 85 120 ns -100 150 ns -150 Non-Volatile SRAM MODULE 8Mbit (1024k x 8bit) 40Pin – DIP, 3.3V Part No. HMN1M8DVN 40-pin Encapsulated Package A0 A7 A5 A4 A6 A1 A3 A12 A14 A16 DQ0 DQ1 DQ2 VSS DQ6 DQ7 /WE A19 NC A2 NC VCC A11 A8 A9 A10 A13 A15 A17 /CE /OE A18 NC DU DU DU DU DQ5 DQ4 DQ3 1 40 2 39 3 38 4 37 5 36 6 35 7 34 8 33 9 32 10 31 11 30 12 29 13 28 14 27 15 26 16 25 17 24 18 23 19 22 20 21 PIN ASSIGNMENT |
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