NV Controller With Battery Monitor

The CMOS BQ2203A SRAM Nonvolatile Controller With Battery Monitor pro- vides all the necessary functions for con- verting one or two banks of standard CMOS SRAM into nonvolatile read/write memory. The BQ2203A is compatible with the Personal Computer Memory Card International Association (PCMCIA) recommendations for battery-backed static RAM memory cards. A precision Comparator monitors the 5V VCC input for an out-of-tolerance condi- tion. When out of tolerance is detected, the two conditioned chip-enable outputs are forced inactive to write-protect banks of SRAM Power for the external SRAMs is switched from the VCC supply to the battery-backup supply as VCC de- cays. 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 out- put provides power-fail and power-on resets for the system. The battery monitor indicates battery-low and battery-fail conditions By Texas Instruments
BQ2203A 's PackagesBQ2203A 's pdf datasheet

BQ2203A Pinout, Pinouts
BQ2203A pinout,Pin out
This is one package pinout of BQ2203A,If you need more pinouts please download BQ2203A's pdf datasheet.

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