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DS2030AB fiches techniques PDF

Maxim Integrated Products - Single-Piece 256kb Nonvolatile SRAM

Numéro de référence DS2030AB
Description Single-Piece 256kb Nonvolatile SRAM
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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DS2030AB fiche technique
Rev 2; 1/05
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DS2030Y/AB Single-Piece 256kb
Nonvolatile SRAM
General Description
The DS2030 is a 256kb reflowable nonvolatile (NV)
SRAM, which consists of a static RAM (SRAM), an NV
controller, and an internal rechargeable manganese lithi-
um (ML) battery. These components are encased in a
surface-mount module with a 256-ball BGA footprint.
Whenever VCC 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 modi-
fied. When VCC is powered down or out of tolerance, the
controller write-protects the SRAM’s contents and pow-
ers the SRAM from the battery. Two versions of the
DS2030 are available, which provide either a 5% or 10%
power-monitoring trip point. The DS2030 also contains a
power-supply monitor output, RST, which can be used
as a CPU supervisor for a microprocessor.
Applications
RAID Systems and Servers POS Terminals
Industrial Controllers
Data-Acquisition Systems
Gaming
Fire Alarms
Router/Switches
PLC
Features
Single-Piece, Reflowable, 27mm2 PBGA Package
Footprint
Internal ML Battery and Charger
Unconditionally Write-Protects SRAM when VCC
is Out-of-Tolerance
Automatically Switches to Battery Supply when
VCC Power Failures Occur
Internal Power-Supply Monitor Detects Power Fail
at 5% or 10% Below Nominal VCC (5V)
Reset Output can be used as a CPU Supervisor
for a Microprocessor
Industrial Temperature Range (-40°C to +85°C)
UL Recognized
Pin Configuration appears at end of data sheet.
Ordering Information
PART
DS2030AB-70
DS2030AB-100
DS2030Y-70
DS2030Y-100
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
256 Ball 27mm2 BGA Module
256 Ball 27mm2 BGA Module
256 Ball 27mm2 BGA Module
256 Ball 27mm2 BGA Module
SPEED (ns)
70
100
70
100
SUPPLY TOLERANCE (%)
5
5
10
10
Typical Operating Circuit
(WR)
P3.6
(RD)
P3.7
PSEN
8051
MICROPROCESSOR
P0.0–7
8 BITS
ALE
P2.0–6
(INT3)
P1.5
FROM EXTERNAL DECODE LOGIC
CE
WE
AND
SN74AC573
LATCH
D0–7 Q0–7
LE
7 BITS
8 BITS
OE
DQ0–7
DS2030
32k x 8
NV SRAM
A0–7
A8–14
RST
______________________________________________ Maxim Integrated Products 1
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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