BQ4011 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

BQ4011
Manufacturer

TI
ChipWorker Part#

CW486821750
RoHS

Lead free / RoHS Compliant
Description

32K × 8 NONVOLATILE SRAM (5V, 3.3V)
Documentation

Datasheet

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BQ4011 Specifications

Attribute	Attribute Value

Part Number	BQ4011
Manufacturer	TI
ChipWorker Part#	CW486821750
Documentation	Datasheet
	expand all
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

* Data Retention for at least 10 Years Without Power
Automatic Write-Protection DuringPower-up/Power-down Cycles
Conventional SRAM Operation, Including Unlimited Write Cycles
Internal Isolation of Battery before Power Application
5-V or 3.3-V Operation
Industry Standard 28-Pin DIP Pinout
## GENERAL DESCRIPTION
The CMOS bq4011/Y/LY is a nonvolatile 262,144-bit static RAM organized as 32,768 words by 8 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 supply for an out-of-tolerance condition. When VCC falls out of tolerance, the SRAM is unconditionally write-protected 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 bq4011/Y/LY uses extremely low standby current CMOS SRAMs, coupled with small lithium coin cells to provide nonvolatility without long write-cycle times and the write-cycle limitations associated with EEPROM.
The bq4011/Y/LY requires no external circuitry and is compatible with the industry-standard 256-kb SRAM pinout.

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