See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

D | 16

Temp:

C (0 to 70)

ECO Plan:

Green (RoHS & no Sb/Br)

BQ2204ASN


SRAM Nonvolatile Controller IC for 4 SRAM Banks

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Texas Instruments BQ2204ASN

The CMOS bq2204A SRAM Non-volatile Controller Unit provides all necessary functions for converting up to four banks of standard CMOS SRAM into nonvolatile read/write memory.

A precision comparator monitors the 5V VCC input for an out-of-tolerance condi-tion. When out-of-tolerance is detected, the four conditioned chip-enable outputs are forced inactive to write-protect up to four banks of SRAM.

During a power failure, the external SRAMs are switched from the VCC supply to one of two 3V backup sup-plies. On a subsequent power-up, the SRAMs are write-protected until a power-valid condition exists.

During power-valid operation, a two-input decoder transparently selects one of up to four banks of SRAM. View datasheet
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