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DS3065WP
3.3V, 8Mb, Nonvolatile SRAM with Clock
General Description
The DS3065WP consists of a static RAM, a nonvolatile
(NV) controller, and a real-time clock (RTC). These com-
ponents are packaged on a surface-mount substrate
and require post-assembly attachment of a DS9034I-
PCX+ battery cap. Whenever V CC is applied to the
module, it powers the clock and SRAM from the external
power source, and allows the contents of the clock reg-
isters 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.
Features
S Reflowable, 34-Pin PowerCap Package
S Integrated RTC
S Unconditionally Write Protects the Clock and
SRAM When V CC is Out of Tolerance
S Automatically Switches to Battery Supply When
V CC Power Failures Occur
S Extended Industrial Temperature Range (-40 N C to
+85 N C)
S Underwriters Laboratories Recognized
Applications
RAID Systems and Servers/Gaming
POS Terminals/Fire Alarms
Industrial Controllers/PLCs
Data-Acquisition Systems
Routers/Switches
Ordering Information
PART
DS3065WP-100IND+
TEMP RANGE
-40 N C to +85 N C
SPEED (ns)
100
SUPPLY VOLTAGE (V)
3.3 Q 0.3
PIN-PACKAGE
34 PowerCap Module
Typical Operating Circuit
MICROPROCESSOR
OR DSP
CE
WR
RD
CS
CE
WE
OE
CS
DS3065WP
1024k x 8
NV SRAM
AND RTC
DATA
ADDRESS
8 BITS
20 BITS
DQ0–DQ7
A0–A19
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-5450; Rev 0; 7/10
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