參數(shù)資料
型號: DS2070W-100
廠商: Maxim Integrated Products, Inc.
英文描述: 3.3V Single-Piece 16Mb Nonvolatile SRAM
中文描述: 3.3V的單件16Mb的非易失SRAM
文件頁數(shù): 1/12頁
文件大?。?/td> 231K
代理商: DS2070W-100
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 V
CC
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 V
CC
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
POS Terminals
Routers/Switches
Fire Alarms
PLC
RAID Systems and Servers
Industrial Controllers
Data-Acquisition Systems
Gaming
Features
o
Single-Piece, Reflowable, (27mm)
2
PBGA Package
Footprint
o
Internal ML Battery and Charger
o
Unconditionally Write-Protects SRAM when V
CC
is Out-of-Tolerance
o
Automatically Switches to Battery Supply when
V
CC
Power Failures Occur
o
Internal Power-Supply Monitor Detects Power Fail
Below Nominal V
CC
(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
D
3.3V Single-Piece 16Mb
Nonvolatile SRAM
______________________________________________
Maxim Integrated Products
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.
1
Rev 0; 8/06
Ordering Information
Pin Configuration appears at end of data sheet.
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
256 Ball (27mm)
2
BGA Module
SPEED (ns)
100
SUPPLY TOLERANCE
3.3V ±0.3V
DS2070W-100#
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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