DS2223/DS2224 DS2223/DS2224 EconoRAM FEATURES PACKAGE OUTLINE TO–92 • Low–cost, general–purpose, 256–bit memory – DS2223 has 256–bit SRAM – DS2224 has 32–bit ROM, 224–bit SRAM • Reduces single pin control, address and data interface to a • 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 SOT–223 1 1 2 3 • Minimal operating power: 45 nanocoulombs per transaction @1.
5V typical • Less than 15 nA standby current at 25°C • Nonvolatile data 1 2 3 2 BOTTOM VIEW See Mech.
Drawings Section 4 3 retention easily achieved via low– cost alkaline batteries or capacitors lers • Directly connects to...

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