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Rev 3; 10/06
DS2030L 3.3V Single-Piece 256kb
Nonvolatile SRAM
General Description
Features
The DS2030L is a 256kb reflowable nonvolatile (NV)
? Single-Piece, Reflowable,
27mm 2
BGA 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 DS2030L 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
PLCs
Pin Configuration appears at end of data sheet.
Ordering Information
PART
DS2030L-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
FROM EXTERNAL DECODE LOGIC
CE
P3.6
(WR)
WE
P3.7
PSEN
(RD)
AND
OE
DQ0–7
DS2030L
32k x 8
8051
MICROPROCESSOR
P0.0–7
8 BITS
SN74AC573
LATCH
D0–7 Q0–7
8 BITS
A0–7
NV SRAM
ALE
LE
P2.0–6
P1.5
(INT3)
7 BITS
A8–14
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.
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相关代理商/技术参数
DS2030W 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3.3V Single-Piece 256k Nonvolatile SRAM
DS2030W-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
DS2030W-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
DS2030Y 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single-Piece 256kb Nonvolatile SRAM
DS2030Y-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
DS2030Y-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
DS2030Y-70 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
DS2030Y-70# 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