DS9034PCX Datasheet, PDF (1/2 Pages) Dallas Semiconductor – PowerCap with Crystal

DS9034PCX
PRELIMINARY
DS9034PCX
PowerCap with Crystal
FEATURES
• Provides 10 years of battery backup power for Non-
volatile Timekeeping RAM’s in the PowerCap Module
package (PCM)
• Snaps directly onto surface–mounted PowerCap
Module Boards
• Detachment feature allows easy removal
• Compatible with these 34–pin PowerCap Modules:
– DS1644P–xxx
– DS1646P–xxx
– DS1647P–xxx
PIN DESCRIPTION
V_BAT
GND
– +3 Volt Battery Output
– Ground
X1, X2
– 32.768 KHz Crystal Connections
DESCRIPTION
The DS9034PCX PowerCap is designed to be a
snap–on lithium power source for Nonvolatile Time-
keeping RAMs in Dallas Semiconductor’s directly sur-
face–mountable PowerCap Module (PCM) package.
After a PowerCap Module Board has been soldered in
place and cleaned, the DS9034PCX PowerCap is
snapped on top of the PCM Board to form a complete
PowerCap Module package. The PowerCap is keyed to
prevent incorrect attachment. The DS9034PCX can be
easily removed by inserting a regular screwdriver into a
detachment feature and prying gently outward and
upward to release the PowerCap from the PowerCap
Module Board.
ABSOLUTE MAXIMUM RATINGS*
Operating Temperature
0°C to 70°C
Storage Temperature
–20°C to +70°C
CRYSTAL CHARACTERISTICS
Nominal Frequency
32.768 KHz
Load Capcitance
6 pF
BATTERY CHARACTERISTICS
Nominal Voltage
3V
Nominal Capacity
130 mAhr
Chemistry
Li (CF)x
Data Retention Life
10 Years (25°C)
* This is a stress rating only and functional operation
of the device at these or any other conditions above
those indicated in the operation sections of this
specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of
time may affect reliability.
ECopyright 1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
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