DS3065WP Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 3.3V, 8Mb, Nonvolatile SRAM with Clock

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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 VCC 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 VCC 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 VCC is Out of Tolerance
S Automatically Switches to Battery Supply When
VCC Power Failures Occur
S Extended Industrial Temperature Range (-40NC to
+85NC)
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
-40NC to +85NC
SPEED (ns)
100
SUPPLY VOLTAGE (V)
3.3 Q0.3
PIN-PACKAGE
34 PowerCap Module
Typical Operating Circuit
CE
WR
RD
CS
MICROPROCESSOR
OR DSP
DATA
ADDRESS
8 BITS
20 BITS
CE
WE
OE
CS
DS3065WP
1024k x 8
NV SRAM
AND RTC
DQ0–DQ7
A0–A19
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or visit Maxim’s website at www.maxim-ic.com.