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BQ4024

Benchmarq
Part Number BQ4024
Manufacturer Benchmarq
Description Nonvolatile SRAM
Published Jan 25, 2007
Detailed Description www.DataSheet4U.com bq4024/bq4024Y 128Kx16 Nonvolatile SRAM Features ® Data retention in the absence of power ® Automat...
Datasheet PDF File BQ4024 PDF File

BQ4024
BQ4024

Overview
www.
DataSheet4U.
com bq4024/bq4024Y 128Kx16 Nonvolatile SRAM Features ® Data retention in the absence of power ® Automatic write-protection during power-up/power-down cycles ® Industry-standard 40-pin 128K x 16 pinout ® Conventional SRAM operation; unlimited write cycles ® 10-year minimum data retention in absence of power ® Battery internally isolated until power is applied General Description The CMOS bq4024 is a nonvolatile 2,097,152-bit static RAM organized as 131,072 words by 16 bits.
The integral control circuitry and lithium energy source provide reliable nonvolatility coupled with the unlimited write cycles of standard SRAM.
The control circuitry constantly monitors the single 5V supply for an out-of-tolerance condition.
When VCC falls out of tolerance, the SRAM is unconditionally writeprotected to prevent an inadvertent write operation.
At this time the integral energy source is switched on to sustain the memory until after VCC returns valid.
The bq4024 uses extremely low st...


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