Functional Description

The Cypress CY14B101K combines a 1 Mbit nonvolatile static RAM with a full featured real time clock in a monolithic integrated circuit. The embedded nonvolatile elements incorporate QuantumTrap™ technology producing the world’s most reliable nonvolatile memory. The SRAM is read and written an infinite number of times, while independent, nonvolatile data resides in the nonvolatile elements.

Features

■ Data integrity of Cypress nvSRAM combined with full featured Real Time Clock (RTC)

■ Watchdog timer

■ Clock alarm with programmable interrupts

■ Capacitor or battery backup for RTC

■ 25 ns, 35 ns, and 45 ns access times

■ Hands off automatic STORE on power down with only a small capacitor

■ STORE to QuantumTrap™ initiated by software, device pin, or on power down

■ RECALL to SRAM initiated by software or on power up

■ Infinite READ, WRITE, and RECALL cycles

■ High reliability

❐ Endurance to 200,000 cycles

❐ Data retention: 20 years at 55°C

■ 10 mA typical ICC at 200 ns cycle time

■ Single 3V operation +20, –10

■ Commercial and industrial temperature

■ SSOP package (ROHS compliant)