CY14E256I
Features
256-Kbit nonvolatile static random access memory (nv SRAM)
- Internally organized as 32 K × 8
- STORE to Quantum Trap nonvolatile elements initiated automatically on power-down (Auto Store) or by using I2C mand (Software STORE) or HSB pin (Hardware STORE)
- RECALL to SRAM initiated on power-up (Power-Up RECALL) or by I2C mand (Software RECALL)
- Automatic STORE on power-down with a small capacitor
- High reliability
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Infinite read, write, and RECALL cycles 1 million STORE cycles to Quantum Trap
- Data retention: 20 years at 85 °C
- Real Time Clock (RTC)
- Full-featured RTC
- Watchdog timer
- Clock alarm with programmable interrupts
- Backup power fail indication
- Square wave output with programmable frequency (1 Hz, 512 Hz, 4096 Hz, 32.768 k Hz)
- Capacitor or battery backup for RTC
- Backup current of 0.45 µA (typical) 2
- High-speed I C interface
- Industry standard 100 k Hz and 400 k Hz speed
- Fast mode Plus 1 MHz speed
- High speed: 3.4 MHz
- Zero cycle delay reads...
