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DS1270W
3.3V 16Mb Nonvolatile SRAM
3.3V Nonvolatile SRAMs Provide Up to 16Mb Density
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Status
Description
The DS1270W 16Mb nonvolatile (NV) SRAMs are 16,777,216-bit, fully static, NV SRAMs organized as 2,097,152 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.
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Data Sheet
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This product contains lithium-metal batteries. See applicable regulations for transport requirements for batteries in equipment.
Key Features
- Five 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
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Applications/Uses
- Automated Test Equipment (ATE)
- Automatic Utility Meter Reading
- Building Energy Management (HVAC)
- Cable Modems
- Computers: Desktop, Workstation, Server
- Digital Television (Receivers, Set-Top Boxes)
- Modems (Analog, ISDN, DSL)
- Network Hubs, Switches, Routers
- Notebook Computers
- Oscilloscopes
- Printers and Faxes
- Programmable Logic Controllers
- Storage Systems
- Test and Measurement Equipment
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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 |
| DS1270W |
NV SRAM |
2M x 8 |
Parallel |
No |
Yes |
No |
No |
No |
3 |
3.6 |
$114.14 @1k |
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See All Memory (EPROM, EEPROM, ROM, NV SRAM) (58)
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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.
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Diagram
Pin Assignment
Application Notes
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Notes |
Free
Sample |
Buy |
Status
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Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| DS1270W-100
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3.3V, 100ns |
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N/A |
No Longer Available |
DS1270W-100#
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EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS1270W-100#
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Active |
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EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36#2*
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0°C to +70°C
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RoHS/Lead-Free: RoHS Qualified
Materials Analysis |
| DS1270W-100IND
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3.3V, 100ns |
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N/A |
No Longer Available |
DS1270W-100IND#
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EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS1270W-100IND#
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Active |
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EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36#2*
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-40°C to +85°C
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RoHS/Lead-Free: RoHS Qualified
Materials Analysis |
| DS1270W-150
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3.3V, 150ns |
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N/A |
No Longer Available |
DS1270W-100#
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EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS1270W-150#
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Active |
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EDIP;36 pin;861.6 mm²
Outline Drawing:21-0245 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: MDT36#2*
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0°C to +70°C
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RoHS/Lead-Free: RoHS Qualified
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- 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.
- * 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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Document Ref.: 19-5614
Rev 3;
2010-11-09
This page last modified: 2010-11-15
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