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HMN12816D-70I Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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1 / 9 page HANBit HMN12816D URL : www.hbe.co.kr 1 HANBit Electronics Co.,Ltd Rev. 0.0 (April, 2002) GENERAL DESCRIPTION The HMN12816D 128K x 16 nonvolatile SRAM’s are 2,097,152-bit fully static, nonvolatile SRAM’s, organized as 131,072 words by 16 bits. Each NVSRAM has a self contained lithium energy source and control circuitry which constantly monitors Vcc for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. DIP-package HMN12816D devices can be used in place of solutions which build nonvolatile 128Kx16 memory by utilizing a variety of discrete components. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing. The HMN12816D 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, 150ns w High-density design : 256KByte Design w Battery internally isolated until power is applied w Industry-standard 40-pin 128K x 16 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 40 12 29 14 27 15 26 10 31 11 30 13 28 2 39 3 38 4 37 6 35 9 32 7 34 5 36 8 33 16 25 /CEU /CEL DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 DQ9 DQ8 Vss DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 /OE 40-pin Encapsulated Package Vcc /WE A16 A15 A14 A13 A12 A11 A10 A9 Vss A8 A7 A6 A5 A4 A3 A2 A1 A0 17 24 18 23 19 22 20 21 Non-Volatile SRAM MODULE 2Mbit (128K x 16-Bit), 40pin-Dip, 5V Part No. HMN12816D |
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