DS1245Y/AB 1024k Nonvolatile SRAM
■The DS1245 1024k Nonvolatile SRAMs are1,048,576-bit, fully static, nonvolatile SRAMs organized as 131.072 words by 8 bits. Each complete NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors V-CC 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. DIP-package DS1245 devices can be used in place of existing 128k x 8 static RAMs directly conforming to the popular bytewide 32-pin DIP standard. DS1245 devices in the PowerCap Module package are directly surface mountable and are normally paired with a DS9034PC PowerCap to form a complete Nonvolatile SRAM module. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.
●FEATURES
■10 years minimum data retention in the absence of external power
■Data is automatically protected during power loss
■Replaces 128k x 8 volatile static RAM, EEPROM or Flash memory
■Unlimited write cycles
■Low-power CMOS
■Read and write access times of 70 ns
■Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
■Full ±10% V-CC operating range (DS1245Y)
■Optional ±5% V-CC operating range (DS1245AB)
■Optional industrial temperature range of -40°C to +85°C, designated IND
■JEDEC standard 32-pin DIP package
■PowerCap Module (PCM) package
▲Directly surface-mountable module
▲Replaceable snap-on PowerCap provides lithium backup battery
▲Standardized pinout for all nonvolatile SRAM products
▲Detachment feature on PowerCap allows easy removal using a regular screwdriver
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DS1245Y 、 DS1245AB 、 DS9034PC+ 、 DS9034PCI+ 、 DS1245 、 DS9034PC 、 DS1245AB-70 、 DS1245Y-70 、 DS1245AB-70+ 、 DS1245ABP-70+ 、 DS1245AB-70IND+ 、 DS1245ABP-70IND+ 、 DS1245Y-70+ 、 DS1245YP-70+ 、 DS1245Y-70IND+ 、 DS1245YP-70IND+ |
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Datasheet |
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Please see the document for details |
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EDIP;PCAP;MDT32+6;PC2+3;DIP |
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English Chinese Chinese and English Japanese |
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11/10 |
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Rev 11/10 |
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19-5638 |
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223 KB |
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