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參數(shù)資料
| 型號： | DS2045W |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3V Single-Piece 1Mb Nonvolatile SRAM |
| 中文描述： | 3.3V、單芯片、1Mb非易失SRAM |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 207K |
| 代理商： | DS2045W |
General Description
The DS2045W 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 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 DS2045W also
contains a power-supply monitor output,
RST
, which can
be used as a CPU supervisor for a microprocessor.
Applications
POS Terminals
Data-Acquisition Systems
Fire Alarms
PLC
RAID Systems and Servers
Industrial Controllers
Gaming
Router/Switches
Features
Single-Piece, Reflowable, 27mm
2
PBGA Package
Footprint
Internal ML Battery and Charger
Unconditionally Write-Protects SRAM when V
CC
is Out-of-Tolerance
Automatically Switches to Battery Supply when
V
CC
Power Failures Occur
Internal Power-Supply Monitor Detects Power Fail
Below Nominal V
CC
(3.3V)
Reset Output can be used as a CPU Supervisor
for a Microprocessor
Industrial Temperature Range (-40
°
C to +85
°
C)
UL Recognized
D
DS2045W 3.3V Single-Piece 1Mb
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 1; 1/05
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
DS2045W-100
Typical Operating Circuit
P4.0
P3.6
P3.7
P1.0–7
AD0–AD7
P4.4
P2.0–7
P3.2
RST
A8–15
A0–7
A16
DQ0–7
OE
WE
CE
8 BITS
8 BITS
8 BITS
(CE0)
(INT0)
8051
MICROPROCESSOR
DS2045W
128k x 8
NV SRAM
(WR)
(RD)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2045W-100 | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS2045W-100# | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS2045Y | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Single-Piece 1Mb Nonvolatile SRAM |
| DS2045Y-100 | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS2045Y-100# | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
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