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DS2070W Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # DS2070W
Description  3.3V Single-Piece 16Mb Nonvolatile SRAM
Download  12 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS2070W Datasheet(HTML) 1 Page - Maxim Integrated Products

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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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