M4ZXX-BR00SH ZEROPOWER SNAPHAT (Battery) ■ Provides Battery 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 DESCRIPTION The M4Zxx-BR00SH SNAPHAT top is a detachable lithium power source for ST’s nonvolatile ZEROPOWER surface mount SOIC (MH) 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 the two piece solution prevents the battery from having to be exposed to the high temperatures of the surface mount process. SNAPHAT (SH) Battery Figure 1. Logic Diagram SNAPHAT VBAT– VBAT+ AI02525 November 1999 1/7 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 SOIC. Critical contact points between the pins and 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 to provide high point contact 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 separating. This package 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 SNAPHAT 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 illustrates the lithium coin cell discharge rate for a given load. This demonstrates the char- Table 1. Description Parameter Value Operating Temperature 1 = 0 to 70 °C 6 = –40 to 85 °C Storage Temperature –40 to 85 °C Nominal Battery Voltage 2.8 V Nominal Battery Capacity 48 mAh 120 mAh Battery Chemistry Li(CF)x M4Z28 M4Z32 acteristically flat voltage level supplied by the battery until very near the end of its life. These discharge levels have been greatly accelerated 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. BATTERY LIFE 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) 5 Average Insertion Force Average Extraction Force 12.5 10 7.5 5 2.5 0 1 2 3 4 5 6 7 8 9 10 Number of Extractions AI02526 2/7 M4ZXX-BR00SH Figure 3. Battery Discharge Rates LOAD CHARACTERISTICS 3.5 Temp: 20˚C Voltage (V) 3.0 2.5 2.0 15kΩ 30kΩ 100kΩ 1.5 1.0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Duration (hrs.) (A) LOAD CHARACTERISTICS 3.5 Temp: 20˚C Voltage (V) 3.0 2.5 2.0 15kΩ 30kΩ 50kΩ 100kΩ 1.5 1.0 0 1000 2000 3000 4000 Duration (hrs.) (B) GENERAL NOTES To remove the SNAPHAT top for replacement, a DIP/IC extractor tool should be used. 5000 6000 AI02519 Figure 4. DIP Extractor Tool 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. AI02527 3/7 M4ZXX-BR00SH Table 2. Ordering Information Scheme Example: M4Z28-BR00 SH 1 Product Family M4Z = SNAPHAT Battery Battery Voltage & Capacity 28-BR00 = BR1225, 3 V, 48 mAh 32-BR00 = BR1632, 3 V, 120 mAh Package SH = SNAPHAT Temperature Range 1 = 0 to 70 °C 6 = –40 to 85 °C For further information on any aspect of this device, please contact the STMicroelectronics Sales Office nearest to you. 4/7 M4ZXX-BR00SH Table 3. M4Z28-BR00SH - ZEROPOWER 4-pin SNAPHAT Housing for 48 mAh Battery, Package Mechanical Data mm inches Symb Typ Min A Max Typ Min Max 9.78 0.385 A1 6.73 7.24 0.265 0.285 A2 6.48 6.99 0.255 0.275 A3 0.38 0.015 B 0.46 0.56 0.018 0.022 D 21.21 21.84 0.835 0.860 E 14.22 14.99 0.560 0.590 eA 15.55 15.95 0.612 0.628 eB 3.20 3.61 0.126 0.142 L 2.03 2.29 0.080 0.090 Figure 5. M4Z28-BR00SH - ZEROPOWER 4-pin SNAPHAT Housing for 48 mAh Battery, Package Outline A1 eA A2 A A3 B L eB D E SHZP-A Drawing is not to scale. 5/7 M4ZXX-BR00SH Table 4. M4Z32-BR00SH - ZEROPOWER 4-pin SNAPHAT Housing for 120 mAh Battery, Package Mechanical Data mm inches Symb Typ Min A Max Typ Min Max 10.54 0.415 A1 8.00 8.51 0.315 0.335 A2 7.24 8.00 0.285 0.315 A3 0.38 0.015 B 0.46 0.56 0.018 0.022 D 21.21 21.84 0.835 0.860 E 17.27 18.03 0.680 0.710 eB 3.20 3.61 0.126 0.142 L 2.03 2.29 0.080 0.090 Figure 6. M4Z32-BR12SH - ZEROPOWER 4-pin SNAPHAT Housing for 120 mAh Battery, Package Outline A1 eA A2 A A3 B L eB D E SHZP-A Drawing is not to scale. 6/7 M4ZXX-BR00SH If you have any questions or suggestions concerning the matters raised in this document, please send them to the following electronic mail addresses: [email protected] (for application support) [email protected] (for general enquiries) Please remember to include your name, company, location, telephone number and fax number. Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is registered trademark of STMicroelectronics 1999 STMicroelectronics - All Rights Reserved All other names are the property of their respective owners. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 7/7