FBGA Package for F-RAM Enables Extra Rugged Memory On-Board

Building on the space savings and reliability advantages of battery-free, non-volatile Ferroelectric RAM (F-RAM), designers using the 4-Mbit Ramtron FM22LD16 in the 48-pin FBGA package can implement four times the F-RAM density within the same board footprint of earlier 44-pin TSOP devices.

The FM22LD16 is pin-compatible with asynchronous static RAM, and features fast access times, virtually unlimited read/write cycles, and low power consumption. The device is organised as 256-kbits x 16, but is also software-configurable as 512-kbits x 8. Other features include the ability to read and write at bus speed for NoDelay™ writes, endurance of at least 100 trillion writes and 10-year data retention. There is also a low power-supply drain voltage monitor, which protects against inadvertent writes.

With a convenient interface to modern high-performance microprocessors, the FM22LD16 features a high-speed pagemode that enables four-byte burst read/write operations at up to 40MHz. This bus speed is significantly higher than other non-volatile memory.

 

FEATURES Operating voltage range: 2.7V to 3.6V 8mA read/write current 90µA standby current 55ns access time 110ns cycle time

APPLICATIONS RAID controllers Networking and data storage Multi-function printers Industrial computers and robotics Navigation systems

 

 

Ramtron / FM22LD16