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What is Battery Backed SRAM?

Battery backed memory has an internal lithium power source and a self-contained control circuitry which constantly monitors VCC for any out-of-tolerance conditions. If such a condition occurs, the lithium battery will automatically switch on and the memory’s write protection is unconditionally enabled in order to prevent data corruption. The number of write cycles that can be executed have no limit and there is no additional support circuitry that is required for microprocessor interfacing. Data can be reliably stored for several years solely on battery power, and data can be stored for a much longer period when VCC is powered. Static random-access memory, or SRAM, is a type of semiconductor memory which uses bistable latching circuitry in order to store each bit. SRAM is different from dynamic RAM (DRAM), which must be refreshed periodically.

Types of Battery Backed SRAMs

There are many different kinds of battery backed SRAMs and at Future Electronics we stock many of the most common types categorized by memory organization, maximum access time, temperature grade, packaging type and nominal supply voltage. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common sizes for maximum access time are 70 ns, 100 ns and 150 ns. We also carry battery backed SRAMs with maximum access time as low as 25 ns. The nominal supply voltage can range from 3 V to 5.5 V, with the most common battery backed SRAM chips having a nominal supply voltage from 4.5 V to 5.5 V.

Battery Backed SRAMs from Future Electronics

Future Electronics has a full selection of battery backed SRAM chips from several manufacturers that can be used to design battery backup SRAM circuit such as an SRAM memory cell, memory modules, SRAM memory card or any other SRAM memory chip. Simply choose from the battery backed SRAM technical attributes below and your search results will quickly be narrowed to match your specific battery backed SRAM application needs.

If you have a preferred brand, we deal with several manufacturers such as Alliance Memory Inc, Cypress, Simtek or STMicroelectronics. You can easily refine your battery backed SRAM product search results by clicking your preferred battery backed SRAM brand below from our list of manufacturers.

Applications for Battery Backed SRAMs:

SRAM is faster and demands less power than DRAM. It is used where either low power or bandwidth are required. SRAM is also easier to control and more truly random access than modern DRAM types. SRAM is also used in PCs, routers, workstations and peripheral equipment: internal CPU caches and external burst mode SRAM caches, router buffers and hard disk buffers, among others. LCD screens and printers also use SRAM in order to hold the image to be printed or displayed. Small SRAM buffers are also found in CD-ROM and CD-RW drives.

Choosing the Right Battery Backed SRAM:

When you are looking for the right battery backed SRAMs, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Memory Organization (2 K x 8, 32 K x 8, 8 K x 8,…), Maximum Access Time (70 ns, 100 ns, 150 ns,…) and Temperature Grade (Commercial, Industrial) to name a few. You will be able to find the right chip from several manufacturers that can be used to design a battery backup SRAM circuit such as an SRAM memory card, SRAM memory cell, memory modules, or any other SRAM memory chips.

Battery Backed SRAMs in Production Ready Packaging or R&D Quantities

If the quantity of battery backed SRAMs required is less than a full reel, we offer customers many of our programmable battery backed SRAM products in tube, tray or individual quantities that will avoid unneeded surplus.

In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that may arise from an unpredictable supply of products containing raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.


Battery Backed SRAMs By Manufacturer Name:

Battery Backed SRAMs by Primary Attributes:

By Memory Organization




By Temperature Grade






Featured Battery Backed SRAM Products


Manufacturer Part Number Description
Alliance Memory Inc AS7C33128NTD32B-166TQC 3.3v 128kx32 No Turn Around
Cypress AS6C1008-55SIN CY14E064L Series 64 Kbit (8 K x 8) 5 V 35 ns nvSRAM - SOIC-28
Cypress CY14E064L-SZ35XI CY14E064L Series 64 Kbit (8 K x 8) 5 V 35 ns nvSRAM - SOIC-28
Simtek STK14CA8-RF35 STK14CA8 Series 1M-bit (128K-bit x 8) 3 V 48-SSOP AutoStore NVSRAM 35ns
Simtek STK22C48-SF45 STK22C Series 16K (2K-bit x 8) 5 V 330 mil SO-28 AutoStore NVSRAM 45 ns
Simtek STK11C68-C35I STK11C Series 64K-bit (8K-bit x 8) 5 V Cerdip-28 Gold Finish NVSRAM 35 ns I-Temp
STMicroelectronics M48T35Y-70MH1F M48T Series 256 Kb ( 32 Kb x 8 ) Timekeeper SRAM w/ 10 % VTP 70 ns TR - SOH-28
STMicroelectronics M48Z35Y-70PC1 M48Z Series 256 Kb ( 32 Kb x 8 ) ± 10 % VTP 70 ns Zeropower SRAM PCDIP-28
STMicroelectronics M48Z08-100PC1 M48Z08 Series 64 Kb ( 8 Kb x 8 ) 5.5 V 100 ns Zeropower SRAM PCDIP-28
STMicroelectronics M48Z35-70PC1 M48Z Series 256 Kb ( 32 Kb x 8 ) ± 5 % VTP 70 ns Zeropower SRAM PCDIP-28
STMicroelectronics M48T58Y-70PC1 M48T Series 64 Kb ( 8K x 8 ) Timekeeper SRAM w/ 10 % VTP 70 ns - PCDIP-28
STMicroelectronics M48Z35-70PC1 M48Z Series 256 Kb ( 32 Kb x 8 ) ± 5 % VTP 70 ns Zeropower SRAM PCDIP-28
STMicroelectronics M48Z02-70PC1 M48Z Series 16 Kb ( 2 Kb x 8 ) ± 5 % VTP 70 ns Zeropower SRAM PCDIP-24
STMicroelectronics M48T02-150PC1 M48T Series 16K-bit (2K x 8) ± 5 % VTP 150 ns Timekeeper SRAM PCDIP-24
STMicroelectronics M48T58Y-70MH1E M48T Series 64 Kb ( 8 Kb x 8 ) ± 10 % VTP 70 ns Timekeeper SRAM SOH-28
STMicroelectronics M48T08-100PC1 M48T Series 64 Kb ( 8K x 8 ) Timekeeper SRAM w/ 5 % VTP 100 ns - PCDIP-28
STMicroelectronics M48T18-150PC1 M48T Series 64 Kb ( 8K x 8 ) Timekeeper SRAM w/ 10 % VTP 150 ns - PCDIP-28
STMicroelectronics M48T37V-10MH1E M48T Series 256 Kb ( 32 Kb x 8 ) 3 V 100 ns Timekeeper SRAM SOH-44
STMicroelectronics M48Z02-150PC1 M48Z Series 16 Kb ( 2 Kb x 8 ) ± 5 % VTP 150 ns Zeropower SRAM PCDIP-24
STMicroelectronics M48T35-70PC1 M48T Series 256 Kb ( 32 Kb x 8 ) Timekeeper SRAM w/ 10 % VTP 100 ns - PCDIP-28
STMicroelectronics M48Z35Y-70PC1 M48Z Series 256 Kb ( 32 Kb x 8 ) ± 10 % VTP 70 ns Zeropower SRAM PCDIP-28
STMicroelectronics M48T37V-10MH1E M48T Series 256 Kb ( 32 Kb x 8 ) 3 V 100 ns Timekeeper SRAM SOH-44
STMicroelectronics M48T08Y-10MH1E M48T Series 8 kb x 8 Organization 4.5 to 5.5 V Non Volatile Static RAM - SOH-28
STMicroelectronics M48T12-70PC1 M48T Series 16K-bit (2K x 8) ± 10 % VTP 70 ns Timekeeper SRAM PCDIP-24
STMicroelectronics M48T129Y-70PM1 M48T Series 1M-bit (128K-bit x 8) ± 10 % VTP 70 ns Timekeeper SRAM PMDIP-32

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