Cypress Semiconductor SRAM Memory Chip, CY14B256LA-SZ25XI- 256kbit

25 ns and 45 ns access times
Internally organized as 32 K ´ 8 (CY14B256LA)
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 3 V +20% to –10% operation
Industrial temperature
44-pin thin small outline package (TSOP) Type II, 48-pin shrunk small outline package (SSOP), and 32-pin small-outline integrated circuit (SOIC) packages
PB-free