DS2224

经济型RAM

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产品详情

Low-cost, general-purpose, 256-bit memory
- DS2223 has 256-bit SRAM
- DS2224 has 32-bit ROM, 224-bit SRAM
Reduces control, address, and data interface to a single pin
Each DS2224 32-bit ROM is factory-lasered with a unique serial number
DS2224 portion of ROM with custom code and unique serial number available
Minimal operating power: 45 nanocoulombs per transaction at 1.5V typical
Less than 15nA standby current at +25°C
Nonvolatile data retention easily achieved by low-cost alkaline batteries or capacitors
Directly connects to a port pin of popular microcontrollers
Operation from 1.2V to 5.5V
Popular TO-92 or SOT-223 surface mount package
Operates over industrial temperature range -40°C to +85°C

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