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Part Number: DS2045AB
Description: The DS2045 is a 1Mb reflowable nonvolatile (NV) SRAM,which consists of a static RAM (SRAM), an NV cont...
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DS2045AB
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DataSheet
General Description
DS2045AB General Description
The DS2045 is a 1Mb 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 modified.When VCC is powered down or out of tolerance,the controller write-protects the SRAM's contents and powers the SRAM from the battery. Two versions of the DS2045 are available, which provide either a 5% or 10% power-monitoring trip point. The DS2045 also contains a power-supply monitor output, RST, which can be used as a CPU supervisor for a microprocessor.
DS2045AB Maximum Ratings
Voltage on Any Pin Relative to Ground ...............-0.3V to +6.0V
Operating Temperature Range ......................-40°C to +85°C
Storage Temperature Range .........................-40°C to +85°C
Soldering Temperature...................See IPC/JEDEC J-STD-020C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DS2045AB Features
· Single-Piece, Reflowable, 27mm2 PBGA Package Footprint
· Internal ML Battery and Charger
· Unconditionally Write-Protects SRAM when VCC is Out-of-Tolerance
· Automatically Switches to Battery Supply when VCC Power Failures Occur
· Internal Power-Supply Monitor Detects Power Fail at 5% or 10% Below Nominal VCC (5V)
· Reset Output can be used as a CPU Supervisor for a Microprocessor
· Industrial Temperature Range (-40°C to +85°C)
· UL Recognized
· Internal ML Battery and Charger
· Unconditionally Write-Protects SRAM when VCC is Out-of-Tolerance
· Automatically Switches to Battery Supply when VCC Power Failures Occur
· Internal Power-Supply Monitor Detects Power Fail at 5% or 10% Below Nominal VCC (5V)
· Reset Output can be used as a CPU Supervisor for a Microprocessor
· Industrial Temperature Range (-40°C to +85°C)
· UL Recognized
DS2045AB Typical Application
·RAID Systems and Servers
·POS Terminals
·Industrial Controllers
·Data-Acquisition Systems
·Gaming
·Fire Alarms
·Router/Switches
·PLC
DS2045AB
PDF/DataSheet Download
- Datasheet: DS2045AB
- File Size: 421888 KB
- Manufacturer: MAXIM
- Click here to Download
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