CY14E256L

PRELIMINARY CY14E256L 256-Kbit (32K x 8) nvSRAM Features 25 ns and 45 ns Access Times “Hands-off” Automatic STORE on Power Down with external 68µF capacitor STORE to QuantumTrap® Nonvolatile Elements is initiated by Software, Hardware or Autostore® on Power-down Functional Description The Cypress CY14E256L is a fast static RAM with a nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTrap technology producing the world’s most reliable nonvolatile memory. The SRAM provides Infinite read and write cycles, while independent, nonvolatile data resides in the highly reliable QuantumTrap cell. Data transfers from the SRAM to the nonvolatile elements (the STORE operation) takes place automatically at power down. On power-up, data is restored to the SRAM (the RECALL operation) from the nonvolatile memory. Both the STORE and RECALL operations are also available under software control. A hardware STORE may be initiated with HSB pin. www.DataSheet4U.com RECALL to SRAM Initiated by Software or Power-up Infinite READ, WRITE and RECALL Cycles 15 mA Typical ICC at 200 ns Cycle Time 1,000,000 STORE Cycles to QuantumTrap 100-Year Data Retention to QuantumTrap Single 5V Operation +10% Commercial Temperature SOIC Package RoHS Compliance Logic Block Diagram Quantum Trap 512 X 512 A5 A6 A7 A8 A9 A 11 A 12 A 13 A 14 VCC VCAP STORE POWER CONTROL STORE/ RECALL CONTROL ROW DECODER STATIC RAM ARRAY 512 X 512 RECALL HSB SO...