Parallel F-RAM Memory FM20L08 - Ramtron - #1

• Organized as 128Kx8

• Unlimited Read/Write Cycles

• NoDelay™ Writes

• Page Mode Operation to 33MHz

• Advanced High-Reliability Ferroelectric Process

• JEDEC 128Kx8 SRAM pinout

• 60 ns Access Time, 150 ns Cycle Time

• Low Voltage monitor drives external /LVL signal

• Write Protects memory for low voltage condition

• No battery concerns

• Monolithic reliability

• True surface mount solution, no rework steps

• Superior for moisture, shock, and vibration

• Resistant to negative voltage undershoots

• 3.3V +10%, -5% Power Supply

• 25 mA Active Current

• Extended Temperature -20° C to +85° C

• 32-pin "Green'VRoHS TSOP (-TGC)

The FM20L08 is a 128K x 8 nonvolatile memory that reads and writes like a standard SRAM. A ferroelectric random access memory or FRAM is nonvolatile, which means that data is retained after power is removed. It provides data retention for over 10 years while eliminating the reliability concerns, functional disadvantages, and system design complexities of battery-backed SRAM (BBSRAM). Fast write timing and unlimited write endurance make FRAM superior to other types of memory.

In-system operation of the FM20L08 is very similar to other RAM devices and can be used as a drop-in replacement for standard SRAM. Read and write cycles may be triggered by /CE or simply by changing the address. The FRAM memory is nonvolatile due to its unique ferroelectric memory process. These features make the FM20L08 ideal for nonvolatile memory applications requiring frequent or rapid writes in the form of an SRAM.

The FM20L08 includes a voltage monitor function that monitors the power supply voltage. It asserts an active-low signal that indicates the memory is write-protected when V_DD drops below a critical threshold. When the /LVL signal is low, the memory is protected against an inadvertent access and data corruption.

Device specifications are guaranteed over the temperature range -20°C to +85°C.

This is a product that has fixed target specifications but are subject to change pending characterization results.

1850 Ramtron Drive, Colorado Springs, CO 80921 (800) 545-FRAM, (719) 481-7000

Rev. 1.9 May 2008

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