Zenode.ai Logo
Log InSign Up

BQ2204A Series

SRAM Nonvolatile Controller IC for 4 SRAM Banks

Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/

Catalog

SRAM Nonvolatile Controller IC for 4 SRAM Banks

PartOperating Temperature [Min]Operating Temperature [Max]Controller TypePackage / CasePackage / CaseSupplier Device PackageMounting TypeVoltage - Supply [Max]Voltage - Supply [Min]
Texas Instruments
BQ2204ASN-N
-40 °C
85 °C
Nonvolatile SRAM
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Surface Mount
5.5 V
4.5 V
Texas Instruments
BQ2204APN
0 °C
70 ░C
Nonvolatile SRAM
16-DIP
0.3 in, 7.62 mm
16-PDIP
Through Hole
5.5 V
4.5 V
Texas Instruments
BQ2204ASNTR
0 °C
70 ░C
Nonvolatile SRAM
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Surface Mount
5.5 V
4.5 V
Texas Instruments
BQ2204ASN
0 °C
70 ░C
Nonvolatile SRAM
16-SOIC
0.154 in, 3.9 mm Width
16-SOIC
Surface Mount
5.5 V
4.5 V

Key Features

• Power monitoring and switching for 3-volt battery-backup applicationsWrite-protect control2-input decoder for control of up to 4 banks of SRAM3-volt primary cell inputsLess than 10ns chip-enable propagation delay5% or 10% supply operationPower monitoring and switching for 3-volt battery-backup applicationsWrite-protect control2-input decoder for control of up to 4 banks of SRAM3-volt primary cell inputsLess than 10ns chip-enable propagation delay5% or 10% supply operation

Description

AI
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 VCCinput 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 VCCsupply 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. 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 VCCinput 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 VCCsupply 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.