Functional Description

The Cypress CY14B101KA/CY14B101MA 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.

特性 Features

■ 1 Mbit nvSRAM

? 20 ns, 25 ns, and 45 ns access times

? Internally organized as 128K x 8 (CY14B101KA) or 64K x 16 (CY14B101MA)

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

? STORE to QuantumTrap nonvolatile elements is initiated by software, hardware, or AutoStore on power down

? RECALL to SRAM initiated on power up or by software

■ High Reliability

? Infinite Read, Write, and RECALL cycles

? 200,000 STORE cycles to QuantumTrap

? 20 year data retention

■ Real Time Clock

? Full featured Real Time Clock

? Watchdog timer

? Clock alarm with programmable interrupts

? Capacitor or battery backup for RTC

? Backup current of 300 nA

■ Industry Standard Configurations

? Single 3V +20, –10 operation

? Commercial and Industrial temperatures

? 44-pin and 54-pin TSOP II and 48-pin SSOP packages

? Pb-free and RoHS compliance