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 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 modi-
fied. When V
CC
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.
Features
o
Single-Piece, Reflowable, 27mm
2
PBGA Package
Footprint
o
Internal ML Battery and Charger
o
Unconditionally Write-Protects SRAM when V
CC
is Out-of-Tolerance
o
Automatically Switches to Battery Supply when
V
CC
Power Failures Occur
o
Internal Power-Supply Monitor Detects Power Fail
at 5% or 10% Below Nominal V
CC
(5V)
o
Reset Output can be used as a CPU Supervisor
for a Microprocessor
o
Industrial Temperature Range (-40°C to +85°C)
o
UL Recognized
DS2030Y/AB
Applications
RAID Systems and Servers
Industrial Controllers
Gaming
Router/Switches
PART
DS2030AB-70#
DS2030AB-100#
DS2030Y-70#
DS2030Y-100#
POS Terminals
Data-Acquisition Systems
Fire Alarms
PLC
Pin Configuration appears at end of data sheet.
Ordering Information
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 27mm
2
BGA Module
256 Ball 27mm
2
BGA Module
256 Ball 27mm
2
BGA Module
256 Ball 27mm
2
BGA Module
SPEED (ns)
70
100
70
100
TOLERANCE (%)
5
5
10
10
#Denotes
a RoHS-compliant device that may include lead that is exempt under the RoHS requirements.
Typical Operating Circuit
FROM EXTERNAL DECODE LOGIC
P3.6
P3.7
PSEN
(WR)
(RD)
AND
OE
DQ0–7
CE
WE
DS2030
32k x 8
NV SRAM
8051
MICROPROCESSOR
P0.0–7
ALE
P2.0–6
(INT3)
8 BITS
SN74AC573
LATCH
D0–7
Q0–7
LE
7 BITS
8 BITS
A0–7
A8–14
P1.5
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.
DS2030Y/AB Single-Piece 256kb
Nonvolatile SRAM
DS2030Y/AB
ABSOLUTE MAXIMUM RATINGS
Voltage on Any Pin Relative to Ground .................-0.3V to +6.0V
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ...............................-40°C to +85°C
Soldering Temperature .....................See IPC/JEDEC J-STD-020
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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