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FM25L16-DG

製品説明
仕様・特性

FM25L16 16Kb FRAM Serial 3V Memory Features 16K bit Ferroelectric Nonvolatile RAM • Organized as 2,048 x 8 bits • Unlimited Read/Write Cycles • 45 Year Data Retention • NoDelay™ Writes • Advanced High-Reliability Ferroelectric Process Sophisticated Write Protection Scheme • Hardware Protection • Software Protection Low Power Consumption • Low Voltage Operation 2.7-3.6V • 1 µA Standby Current D E D S N N E G M SI B M E 16 O D 25L C E W : FM R E ive T N nat O R lter N O A F Very Fast Serial Peripheral Interface - SPI • Up to 18 MHz Frequency • Direct Hardware Replacement for EEPROM • SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1) Industry Standard Configuration • Industrial Temperature -40°C to +85°C • 8-pin “Green”/RoHS SOIC and TDFN Packages • TDFN Footprint Conforms to TSSOP-8 • Grade 3 AEC-Q100 Qualified (SOIC only) Description Pin Configuration The FM25L16 is a 16-kilobit nonvolatile memory employing an advanced ferroelectric process. A ferroelectric random access memory or FRAM is nonvolatile and performs reads and writes like a RAM. It provides reliable data retention for 45 years while eliminating the complexities, overhead, and system level reliability problems caused by EEPROM and other nonvolatile memories. Unlike serial EEPROMs, the FM25L16 performs write operations at bus speed. No write delays are incurred. Data is written to the memory array immediately after each byte has been transferred to the device. The next bus cycle may commence without the need for data polling. The product offers virtually unlimited write endurance, orders of magnitude more endurance than EEPROM. FRAM also exhibits much lower power during writes than EEPROM. These capabilities make the FM25L16 ideal for nonvolatile memory applications requiring frequent or rapid writes. Examples range from data collection, where the number of write cycles may be critical, to demanding industrial controls where the long write time of EEPROM can cause data loss. The FM25L16 provides substantial benefits to users of serial EEPROM as a hardware drop-in replacement. The FM25L16 uses the high-speed SPI bus, which enhances the high-speed write capability of FRAM technology. Device specifications are guaranteed over an industrial temperature range of -40°C to +85°C. This product conforms to specifications per the terms of the Ramtron standard warranty. The product has completed Ramtron’s internal qualification testing and has reached production status. Rev. 3.2 Feb. 2011 CS SO WP 1 8 2 7 3 6 VSS 4 5 /CS SO /WP VSS Pin Name /CS /WP /HOLD SCK SI SO VDD VSS 1 2 3 4 VDD HOLD SCK SI Top View 8 7 6 5 VDD /HOLD SCK SI Function Chip Select Write Protect Hold Serial Clock Serial Data Input Serial Data Output Supply Voltage Ground Ordering Information FM25L16-G † FM25L16-GTR † “Green”/RoHS 8-pin SOIC “Green”/RoHS 8-pin SOIC, Tape & Reel FM25L16-DG “Green”/RoHS 8-pin TDFN FM25L16-DGTR “Green”/RoHS 8-pin TDFN, Tape & Reel † Grade 3 AEC-Q100 Qualified Ramtron International Corporation 1850 Ramtron Drive, Colorado Springs, CO 80921 (800) 545-FRAM, (719) 481-7000 www.ramtron.com Page 1 of 14

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RAMTRON

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