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 1011 read/write cycles.