POWER MONITORING AND SWITCHING CONTROLLER FOR 3.3V SRAM

The CMOS bq2205 SRAM non-volatile controller with reset provides all the necessary functions for converting one or two banks of standard CMOS SRAM into non-volatile read/write memory. A precision Comparator monitors the 3.3-V VCC input for an out-of-tolerance condition. When out-of-tolerance is detected, the two conditioned chip-enable outputs are forced inactive to write-protect both banks of SRAM Power for the external SRAMs VOUT, is switched from the VCC supply to the battery-backup supply as VCC decays. On a subsequent power-up, the VOUT supply is automatically switched from the backup supply to the VCC supply. The external SRAMs are write-protected until a power-valid condition exists. The reset output provides power-fail and power-on resets for the system. During power-valid operation, the input decoder, A, selects one of two banks of SRAM By Texas Instruments
BQ2205Y 's PackagesBQ2205Y 's pdf datasheet



BQ2205Y Pinout, Pinouts
BQ2205Y pinout,Pin out
This is one package pinout of BQ2205Y,If you need more pinouts please download BQ2205Y's pdf datasheet.

BQ2205Y Application circuits
BQ2205Y circuits
This is one application circuit of BQ2205Y,If you need more circuits,please download BQ2205Y's pdf datasheet.


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