Cypress Semiconductor SRAM Memory Chip, CY14E256LA-SZ25XI- 256kbit

25 ns and 45 ns access times
Internally organized as 32 K ´ 8 (CY14E256LA)
Hands-off automatic STORE on power-down with only a small capacitor
STORE to Quantum Trap nonvolatile elements initiated by software, device pin, or auto store on power-down
RECALL to SRAM initiated by software or power-up
Infinite read, write, and RECALL cycles
1 million STORE cycles to Quantum Trap
20-year data retention
Single 5 V + 10% operation
Industrial temperature
44-pin thin small-outline package (TSOP) Type II and 32-pin small-outline integrated circuit (SOIC) package
PB-free