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參數(shù)資料
| 型號： | DS3050W |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3V Single-Piece 4Mb Nonvolatile SRAM with Clock |
| 中文描述： | 3.3V、單芯片、4Mb非易失SRAM，帶有時鐘 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 555K |
| 代理商： | DS3050W |
General Description
The DS3050W consists of a static RAM, a nonvolatile
(NV) controller, a year 2000-compliant real-time clock
(RTC), and an internal rechargeable manganese lithium
(ML) battery. These components are encased in a sur-
face-mount module with a 256-ball BGA footprint.
Whenever V
CC
is applied to the module, it recharges
the ML battery, powers the clock and SRAM from the
external power source, and allows the contents of the
clock registers or SRAM to be modified. When V
CC
is
powered down or out-of-tolerance, the controller write-
protects the memory contents and powers the clock
and SRAM from the battery. The DS3050W also con-
tains a power-supply monitor output (
RST
), as well as a
user-programmable interrupt output (
IRQ
/FT).
Applications
Gaming
Fire Alarms
PLCs
Routers/Switches
RAID Systems and Servers
POS Terminals
Industrial Controllers
Data-Acquisition Systems
Features
Single-Piece, Reflowable, 27mm x 27mm BGA
Package Footprint
Internal Manganese Lithium Battery and Charger
Integrated Real-Time Clock
Unconditionally Write-Protects the Clock and
SRAM when V
CC
is Out-of-Tolerance
Automatically Switches to Battery Supply when
V
CC
Power Failures Occur
Reset Output can be Used as a CPU Supervisor
Interrupt Output can be Used as a CPU Watchdog
Timer
Industrial Temperature Range (-40°C to + 85°C)
UL Recognized
D
3.3V Single-Piece 4Mb Nonvolatile SRAM
with Clock
______________________________________________
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
CE
DATA
ADDRESS
INT
RST
A0–18
DQ0–7
CE
19 BITS
8 BITS
MICROPROCESSOR
OR DSP
DS3050W
512k x 8
NV SRAM
AND RTC
WR
WE
RD
OE
INT
IRQ/FT
CS
CS
Typical Operating Circuit
Rev 0; 4/05
Ordering Information
Pin Configuration appears at end of data sheet.
PART
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
SPEED
100ns
SUPPLY VOLTAGE (%)
3.3V ±0.3V
DS3050W-100
256-ball 27mm x 27mm BGA Module
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS3050W-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 |
| DS3050W-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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