DS9034PCX
PowerCap with Crystal
DS9034PCX
PRELIMINARY
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FEATURES
•Provides 10 years of battery backup power for Non-
volatile T imekeeping RAMs 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 Module
boards:
– DS1386P
– DS1486P
– DS1643P
– DS1644P
– DS1646P
– DS1647P
– DS1743P/WP
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.
PIN DESCRIPTION
VBAT – +3 Volt Battery Output
GND – Ground
X1, X2 – 32.768 kHz Crystal Connections
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.
DS9034PCX
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POWERCAP ATTACHMENT
1. Align PowerCap contact
springs with module
base contact lands.
2. Hook PowerCap flange
under module base
board. Fit Alignment
ribs on PowerCap into
alignment notches in
module base board.
3. Push down slot side of PowerCap until it snaps onto module base.
POWERCAP REMOVAL
2. Pull back screwdriver handle
slowly until slot side of
PowerCap releases from
module base.
1. Insert small flathead
screwdriver vertically
into PowerCap slot.
DS9034PCX
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DS9034PCX
PKG INCHES
DIM MIN NOM MAX
A 0.845 0.850 0.855
B 0.955 0.960 0.965
C 0.210 0.215 0.220
D 0.065 0.070 0.075
E 0.065 0.070 0.075
POWER CAP: BATTERY AND CRYSTAL
TOP VIEW
SIDE VIEW
BOTTOM VIEW: REF ONLY
CONTACT SPRINGS
ATTENTION: BATTERY COMPONENT
The DS9034PCX contains a lithium battery . Do not short, ground or apply external voltages to the electrical portions
of this device. Do not expose to temperatures over 85°C. Do not subject this device to any type of cleaning process.
Store only in non–conductive containers. Failure to observe these precautions may result in battery discharge or
decreased battery life.
