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DS2070W Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS2070W Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page General Description The DS2070W is a 16Mb reflowable nonvolatile (NV) SRAM, which consists of a static RAM (SRAM), an NV controller, and an internal rechargeable manganese lithium (ML) battery. These components are encased in a surface-mount module with a 256-ball BGA footprint. Whenever VCC is applied to the module, it recharges the ML battery, powers the SRAM from the external power source, and allows the contents of the SRAM to be mod- ified. When VCC is powered down or out-of-tolerance, the controller write-protects the SRAM’s contents and powers the SRAM from the battery. The DS2070W also contains a power-supply monitor output, RST, which can be used as a CPU supervisor for a microprocessor. Applications RAID Systems and Servers POS Terminals Industrial Controllers Routers/Switches Data-Acquisition Systems Fire Alarms Gaming PLC Features o Single-Piece, Reflowable, (27mm)2 PBGA Package Footprint o Internal ML Battery and Charger o Unconditionally Write-Protects SRAM when VCC is Out-of-Tolerance o Automatically Switches to Battery Supply when VCC Power Failures Occur o Internal Power-Supply Monitor Detects Power Fail Below Nominal VCC (3.3V) o Reset Output can be Used as a CPU Supervisor for a Microprocessor o Industrial Temperature Range (-40°C to +85°C) o UL Recognized 3.3V Single-Piece 16Mb Nonvolatile SRAM ______________________________________________ Maxim Integrated Products 1 Rev 0; 8/06 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Ordering Information Pin Configuration appears at end of data sheet. PART TEMP RANGE PIN-PACKAGE SPEED (ns) SUPPLY TOLERANCE DS2070W-100# -40°C to +85°C 256 Ball (27mm)2 BGA Module 100 3.3V ±0.3V Typical Operating Circuit (CE) DATA ADDRESS (INT) RST A0–A20 DQ0–DQ7 CE 21 BITS 8 BITS MICROPROCESSOR OR DSP DS2070W 2048k x 8 NV SRAM (WR) WE (RD) OE #Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. |
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