CY14C512I Datasheet | Cypress

512-Kbit (64 K × 8) Serial (I C) nv SRAM with Real Time Clock 512-Kbit (64 K × 8) Serial (I2C) nv SRAM with Real Time Clock CY14C512I CY14B512I, CY14E512I 2 Features - - 512-Kbit nonvolatile static random access memory (nv SRAM) - Internally organized as 64 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 - 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 and writes - Write protection - Hardware protection using Write Protect (WP) pin - Software block protection for one-quarter, one-half, or entire...