SGS Thomson Microelectronics M4Z32-BR00SH6, M4Z32-BR00SH1, M4Z28-BR00SH1 Datasheet
ZEROPOWER SNAPHAT (Battery)
■ Provides Ba ttery Backup Power for Non -Volatile
ZEROPOWERs and Controllers in the
SNAPHAT SOIC Package
■ Removable Battery Avoids Heat Associated
with Surface Mount Process
■ Snaps Directly onto Surface-Mounted
SNAPHAT SOIC
■ Choice of Battery Capacities
– M4Z28-BR00SH = 48 mAh
– M4Z32-BR00SH = 120 mAh
■ Keyed Insertion to Insure Proper Assembly
■ Removable for Replacement and Proper
Disposal
■ Available in Tubes or Tape & Reel
■ For Use with the 28 pin SOIC Version of the
ZEROPOWER Product Families
M4ZXX-BR00SH
SNAPHAT (SH)
Battery
Figure 1. Logic Diagram
DESCRIPTION
The M4Zxx-BR00SH SNAPHAT top is a
detachable lithium power source for ST’s nonvolatile Z ER OPOW ER s urface mou n t SO IC (M H)
package (28 pin).
The SNAPHAT top contains a lithium battery and
is designed to be "snapped on" after the SOIC is
surface mounted on the PC board. Thus th e two
piece solution prevents the battery from ha ving t o
be exposed to the hi gh temperatures of the surface mount process.
SNAPHAT
V
BAT–VBAT+
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1/7November 1999
M4ZXX-BR00SH
MECHANICAL INFORMATION
Electrical connection to the SOIC is made through
two pins that connect to the press fitted sockets at
one end of the SO IC. Critical contact points between the pins a nd sockets are gold-plated to resist oxidation. Internally, each socket contains six
independent contact fingers to form redundant
connections between the two components. These
sockets were designed t o provide hi gh point c ontact force to provide the lowest possible contact resistance. The SNAPHAT top also incorporates
four molded-in retaining clips which hold onto the
ends of the SOIC insuring mechanical and electrical connection even under severe mechanical
shock and vibration. The combined SOIC and
SNAPHAT assembly can sustain shock levels in
excess of 100 g without separat ing. Th is pack age
also passes variable frequency testing in accordance with MIL-STD-883, method 2007. 2, condition A.
Figure 2 illustrates the affect of repeated insertion
and extraction of the SNAPHA T top to the SOIC.
The force required to extract the SNAPHAT, and
then to re-insert it, reduces each time. After three
or four extractions, though, the reduction starts to
become unnoticeable, and the force required
remains at a fairly constant figure. Typically,
though, the SNAPHAT will only need to be
extracted and re-inserted once in its lifetime.
BATTERY CHARACTERISTICS
Figure 3 illust rates the lithi um coin cell disc harge
rate for a given load. This demonstrates the char-
Table 1. Description
Parameter Value
Operating
Temperature
Storage
Temperature
Nominal
Battery Voltage
Nominal
Battery Capacity
Battery Chemistry Li(CF)x
1 = 0 to 70 °C
6 = –40 to 85 °C
–40 to 85 °C
2.8 V
48 mAh M4Z28
120 mAh M4Z32
acteristically flat voltage level supplied by t he ba ttery until very near the end of its life. These
discharge levels have been great ly acc ele rated in
comparison to the normal, actual usage.
UL RECOGNITION
The M4Zxx-BR00SH has been recognized by Underwriters Laboratories under their Component
Recognition Program and carries U.L. File Number E89556.
BATTER Y LI FE
For information on Data Retention Life and Battery
Storage Life, please refer to the Application Note
AN1012.
Figure 2. SNAPHAT Insertion/Extraction Forces
20
7.5
Force (pounds)
2/7
5
12.5
10
7.5
5
2.5
0
123
Average Insertion Force
Average Extraction Force
45
Number of Extractions
6
7
98
10
AI02526
Figure 3. Batt ery D is cha rge Rates
LOAD CHARACTERISTICS Temp: 20˚C
3.5
3.0
2.5
M4ZXX-BR00SH
2.0
Voltage (V)
1.5
1.0
0
LOAD CHARACTERISTICS Temp: 20˚C
3.5
3.0
2.5
2.0
Voltage (V)
1.5
1.0
0
15kΩ 30kΩ
200 400 600 1200 1600 1800
15kΩ 30kΩ 50kΩ 100kΩ
1000 2000 3000 4000 5000 6000
800 1000 1400 2000
Duration (hrs.)
(A)
Duration (hrs.)
(B)
100kΩ
AI02519
GENERAL NOTES
To remove the SNAPHAT top for replacement, a
DIP/IC extractor tool should be used.
Caution: To avoid draining battery do NOT place
SNAPHAT pins in a conductive foam.
Caution:Tto avoid damaging SNAPHAT sockets
do NOT wave solder SOIC.
For battery disposal information, see on the web at
www.rayovac.com.
Figure 4. DIP Extractor Tool
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