Hanbit HMN1288DV
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 outof-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.
| Part No. |
HMN1288DV |
| Datasheet |
HMN1288DV
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| Manufacturer |
 Hanbit |
| Description |
Non-Volatile SRAM MODULE 1Mbit |
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GENERAL DESCRIPTION
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 V CC 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 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 w Conventional SRAM operation; unlimited write cycles NC PIN ASSIGNMENT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21...
