Maxim > Products > Memory > DS1265W

DS1265W

3.3V 8Mb Nonvolatile SRAM

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Status Explanations for product status codes

Part Number Status
DS1265W Active: In Production. See Ordering Information for details.

Description

The DS1265W 8Mb nonvolatile (NV) SRAMs are 8,388,608-bit, fully static, NV SRAMs organized as 1,048,576 words by 8-bits. Each NV SRAM has a self-contained lithium energy source and control circuitry that constantly monitors VCC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 3 (PDF, 192kB)
Send this datasheet to any email addressE-Mail

Errata DS1265W 1265WB.pdf
This product contains lithium-metal batteries. See applicable regulations for transport requirements for batteries in equipment.

Key Features

  • 10 years minimum data retention in the absence of external power
  • Data is automatically protected during power loss
  • Unlimited write cycles
  • Low-power CMOS operation
  • Read and write access times of 100ns
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
  • Optional industrial (IND) temperature range of -40°C to +85°C
  • Underwriters Laboratories (UL) Recognized
   
   

Key Specifications:

Memory (EPROM, EEPROM, ROM, NV SRAM)
Part Number Memory Type Memory Size Bus Type Real Time Clock DIP w/Int. Batt. Pwr. Cap Pckg. Battery Monitor GPIO VSUPPLY
(V)
VSUPPLY
(V)
Budgetary Price
min max See Notes
DS1265W  NV SRAM 1M x 8 Parallel No Yes No No No 3 3.6 $70.25 @1k
See All Memory (EPROM, EEPROM, ROM, NV SRAM) (58)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

DS1265W: Pin Assignment
Pin Assignment

Application Notes

Application Note 202   NV SRAM Frequently Asked Questions
Application Note 1066   Tech. Brief 39: NV SRAM Cross Reference Table
Application Note 3759   Timing Considerations When Using NVSRAM
Application Note 4289   Low-Temperature Data Retention in Nonvolatile SRAM
Application Note 4893   Substitution Rules for Nonvolatile Memory Components
Application Note 5013   Lithium Battery Content in Maxim Products

Reliability Reports

Reliability Report: DS1265W.pdf
Underwriters Laboratories (UL) Recognized

Software/Models

none

Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Part Number Notes Free
Sample
Buy Status Explanations for product status codes Recommended Replacement Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
DS1265W-100   3.3V, 100ns    N/A No Longer Available DS1265W-100+

 
EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
DS1265W-100+    
Active   EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
DS1265W-100IND   3.3V, 100ns    N/A No Longer Available DS1265W-100IND+

 
EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
DS1265W-100IND+    
Active   EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
DS1265W-150   3.3V, 150ns    N/A No Longer Available DS1265W-100+

 
EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
DS1265W-150+    
Active   EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis

Notes:
  1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
  2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
  3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
  4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Information Index

Document Ref.: 19-5417 Rev 3; 2010-11-05
This page last modified: 2010-11-09


 


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