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| 型号： | DS2045W-100# |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC NVSRAM 1MBIT 100NS 256BGA |
| 标准包装： | 1 |
| 格式 - 存储器： | RAM |
| 存储器类型： | NVSRAM（非易失 SRAM） |
| 存储容量： | 1M (128K x 8) |
| 速度： | 100ns |
| 接口： | 并联 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 256-BBGA |
| 供应商设备封装： | 256-BGA（27x27） |
| 包装： | 托盘 |
Rev 3; 10/06
DS2045W 3.3V Single-Piece 1Mb
Nonvolatile SRAM
General Description
Features
The DS2045W is a 1Mb reflowable nonvolatile (NV)
? Single-Piece, Reflowable,
27mm 2
PBGA Package
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
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
RAID Systems and Servers
Industrial Controllers
POS Terminals
Data-Acquisition Systems
Gaming
Router/Switches
Fire Alarms
PLC
Pin Configuration appears at end of data sheet.
Ordering Information
PART
DS2045W-100#
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
256 Ball 27mm 2 BGA Module
SPEED (ns)
100
SUPPLY TOLERANCE
3.3V ±0.3V
# Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements.
Typical Operating Circuit
P4.0
P3.6
P3.7
(CE0)
(WR)
(RD)
CE
WE
OE
DS2045W
8051
AD0–AD7
8 BITS
DQ0–7
128k x 8
MICROPROCESSOR
NV SRAM
P1.0–7
P4.4
P2.0–7
P3.2
(INT0)
8 BITS
8 BITS
A0–7
A16
A8–15
RST
______________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2045W-100# | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| DS2045Y | 制造商:DALLAS 制造商全称: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 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| DS2045Y-100# | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| DS2045Y20# | 制造商:Maxim Integrated Products 功能描述: |
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