FM30C256-S

FM30C256 256Kb Data Collector Features 256K bit Ferroelectric Nonvolatile RAM Organized as 32,768 x 8 bits High Endurance 10 Billion (1010) Read/Writes 10 year Data Retention NoDelay™ Writes Advanced High-Reliability Ferroelectric Process Fast Two-wire Serial Interface Up to 1 MHz Maximum Bus Frequency Supports Legacy Timing for 100 kHz & 400 kHz Clock Registers Accessed via 2-wire Interface Real-time Clock/Calendar Backup Current under 1 µA Tracks Seconds through Centuries (BCD format) Tracks Leap Years through 2099 Uses Standard 32.768 kHz Crystal (6pF) Software Calibration System Supervisor Active-low Reset Output for VDD Out-of-Tolerance Tamper Detect Input with Battery Backup and Time Stamp Description The FM30C256 is a 256-kilobit data collection subsystem including nonvolatile RAM, timekeeping, CPU supervisor, and system tamper detection. Nonvolatile RAM is provided by FRAM technology, which is ideal for collection data and requires no battery backup for nonvolatile storage. In other respects, it provides the same features as SRAM. FRAM performs write operations at bus speed with no write delays. Write cycles can be continuous without block limitations. In addition, it offers much higher write endurance than other nonvolatile memories. The FM30C256 supports up to 1010 read/write cycles. The FM30C256 also includes timekeeping with external battery backup. The timekeeper consists of registers that represent time and date information in BCD ...