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Description
The U637256 has two separate modes of operation: SRAM mode and nonvolatile mode. In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled.
Specifications and features
□ CMOS non volatile static RAM 32768 x 8 bits
□ 70 ns Access Time
□ 35 ns Output Enable Access Time
□ ICC = 15 mA typ. at 200 ns Cycle Time
□ Unlimited Read and Write Cycles to SRAM
□ Automatic STORE to EEPROM on Power Down using charge stored in an integrated capacitor
□ Software initiated STORE
□ Automatic STORE Timing
□ 106 STORE cycles to EEPROM
□ 100 years data retention in EEPROM
□ Automatic RECALL on Power Up
□ Software RECALL Initiation
□ Unlimited RECALL cycles from EEPROM
□ Single 5 V ± 10 % Operation
□ Operating temperature range: 0 to 70 °C -40 to 85°C
□ QS 9000 Quality Standard (MIL STD 883C M3015.7)
□ RoHS compliance and Pb- free Package: PDIP28 (600 mil)Application Scenarios
The U637256 is suitable for applications that require both SRAM and nonvolatile data storage. It can be used in various electronic devices such as computers, communication equipment, and industrial control systems.
Comparison
Advantages- CMOS non volatile static RAM
- High access speed
- Unlimited read and write cycles
- Automatic store and recall functionalityDisadvantages- Limited operating temperature range
- Limited voltage operation at ±10% -
Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download U637256D1C70
- Chipdatas Part: CD94-U637256D1C70
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 07:56 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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