M4T28-BR12SH M4T32-BR12SH TIMEKEEPER(R) SNAPHAT(R) (battery and crystal) Features Provides battery backup power for non-volatile TIMEKEEPER(R) and supervisor devices in the 28- or 44-pin SNAPHAT(R) SOIC package Removable battery avoids heat associated with surface mount process Snaps directly onto surface-mounted SNAPHAT SOIC Choice of battery capacities: - M4T28-BR12SH = 48 mAh - M4T32-BR12SH = 120 mAh Keyed insertion to ensure proper assembly Removable for replacement and proper disposal Pb-free package Available in Ecopack(R) packages, tubes or tape & reel November 2008 SNAPHAT (SH) battery/crystal Rev 3 1/16 www.st.com 1 Contents M4T28-BR12SH, M4T32-BR12SH Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Mechanical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 Battery characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 UL recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 Battery life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.4 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 M4T28-BR12SH, M4T32-BR12SH List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SH - 4-pin SNAPHAT(R) housing for 48 mAh battery & crystal, package mechanical data 11 SH - 4-pin SNAPHAT(R) housing for 120 mAh battery & crystal, package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3/16 List of figures M4T28-BR12SH, M4T32-BR12SH List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. 4/16 Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SNAPHAT(R) insertion/extraction forces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Battery discharge rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 DIP extractor tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 SH - 4-pin SNAPHAT(R) housing for 48 mAh battery & crystal, package outline . . . . . . . . 11 SH - 4-pin SNAPHAT(R) housing for 120 mAh battery & crystal, package outline . . . . . . . 12 Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 M4T28-BR12SH, M4T32-BR12SH 1 Description Description The M4TXX-BR12SH SNAPHAT(R) top is a detachable lithium power source for ST's nonvolatile TIMEKEEPER(R) surface-mount SOIC (MH) package (28- and 44-pin). The SNAPHAT top contains both the battery and crystal 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 and crystal from being exposed to the high temperatures of the surface mount process. Figure 1. Logic diagram X1 X2 SNAPHAT VBAT- VBAT+ AI02528 Table 1. Signal names X1 Crystal input X2 Crystal output VBAT- Negative voltage VBAT+ Positive voltage 5/16 Maximum ratings 2 M4T28-BR12SH, M4T32-BR12SH Maximum ratings Stressing the device above the rating listed in the absolute maximum ratings table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE program and other relevant quality documents. Table 2. Symbol TA TSTG Absolute maximum ratings Parameter Ambient operating temperature Grade 1 Grade 6(1) Storage temperature (VCC off, oscillator off) 1. Only the M4T32-BR12SH is available in industrial temperature (grade 6). Caution: 6/16 Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets. Value Unit 0 to 70 C -40 to 85 C -40 to 85 C M4T28-BR12SH, M4T32-BR12SH 3 DC and AC parameters DC and AC parameters This section summarizes the operating and measurement conditions, as well as the DC and AC characteristics of the device. The parameters in the following DC and AC characteristic tables are derived from tests performed under the measurement conditions listed in the relevant tables. Designers should check that the operating conditions in their projects match the measurement conditions when using the quoted parameters. Table 3. Operating and AC measurement conditions Parameter Nominal battery voltage (VCC) Nominal battery capacity M4T28-BR12SH M4T32-BR12SH Unit 2.8 2.8 V mAh 48 120 Li(CF) Li(CF) 12.5 12.5 pF Nominal crystal frequency 32.768 32.768 kHz Crystal accuracy (at 25C) 35 35 ppm Battery chemistry Crystal load capacitance (CL) 7/16 Mechanical information 4 M4T28-BR12SH, M4T32-BR12SH Mechanical information Electrical connection to the SOIC is made through four pins that connect to the four press fitted sockets at each 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 with high point contact force to provide the lowest possible contact resistance. The SNAPHAT(R) 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 four or five extractions, 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. SNAPHAT(R) insertion/extraction forces Figure 2. 15 12.5 Average Insertion Average Extraction Force (pounds) 10 7.5 5 2.5 0 1 2 3 4 5 6 7 8 9 10 Number of Extractions AI02526 8/16 M4T28-BR12SH, M4T32-BR12SH 4.1 Mechanical information Battery characteristics Figure 3 on page 10 illustrates the lithium coin cell discharge rate for a given load. This demonstrates the characteristically 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. Note: These batteries contain no mercury (Hg), cadmium (Cd), or lead (Pb). 4.2 UL recognition The M4Txx-BR12SH has been recognized by Underwriters Laboratories under their Component Recognition Program and carries U.L. File Number E89556. 4.3 Battery life For information on data retention life and battery storage life, please refer to the application note AN1012. 4.4 General notes ST has conducted experiments using a manual press which determined that if approximately 60 pounds of force is applied to the top of the SNAPHAT(R), battery damage and/or die cracks could be induced. As Figure 2 on page 8 specifies, only an average of less than 13 force-pounds is required for proper insertion. We recommend that no more than 40 pounds of force be applied during SNAPHAT insertion. If a manual press in employed, it is very important that it be calibrated such that it cannot exceed this limit. To remove the SNAPHAT top for replacement, a DIP/IC extractor tool should be used (see Figure 4). The SNAPHAP top should be grabbed by the narrow end to avoid bending the pins. Caution: To avoid draining battery do NOT place SNAPHAT pins into conductive foam. Caution: To avoid damaging SNAPHAT sockets do NOT wave solder SOIC. 9/16 Mechanical information Figure 3. M4T28-BR12SH, M4T32-BR12SH Battery discharge rates LOAD CHARACTERISTICS 3.5 Temp: 20C Voltage (V) 3.0 2.5 BR1225 2.0 15k 100k 30k 1.5 1.0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Duration (hrs.) (A) LOAD CHARACTERISTICS 3.5 Temp: 20C Voltage (V) 3.0 2.5 BR1632 2.0 15k 30k 50k 100k 1.5 1.0 0 1000 2000 3000 4000 Duration (hrs.) (B) Figure 4. 5000 6000 AI02519 DIP extractor tool AI02527 10/16 M4T28-BR12SH, M4T32-BR12SH 5 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 5. SH - 4-pin SNAPHAT(R) housing for 48 mAh battery & crystal, package outline A1 A2 A3 A eA B L eB D E SHTK-A Note: Drawing is not to scale. Table 4. SH - 4-pin SNAPHAT(R) housing for 48 mAh battery & crystal, package mechanical data mm inches Symb Typ Min A Max Typ Min 9.78 Max 0.385 A1 6.73 7.24 0.265 0.285 A2 6.48 6.99 0.255 0.275 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 A3 0.38 0.015 11/16 Package mechanical data Figure 6. M4T28-BR12SH, M4T32-BR12SH SH - 4-pin SNAPHAT(R) housing for 120 mAh battery & crystal, package outline A1 A2 A3 A eA B L eB D E SHTK-A Note: Drawing is not to scale. Table 5. SH - 4-pin SNAPHAT(R) housing for 120 mAh battery & crystal, package mechanical data mm inches Symb Typ Min A Typ Min 10.54 Max 0.415 A1 8.00 8.51 0.315 0.335 A2 7.24 8.00 0.285 0.315 A3 12/16 Max 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 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 M4T28-BR12SH, M4T32-BR12SH 6 Part numbering Part numbering Table 6. Ordering information scheme Example: M4T 28-BR12 SH 1 TR Device type M4T Battery voltage and capacity 28-BR12 = BR1225, 3 V, 48 mAh 32-BR12 = BR1632, 3 V, 120 mAh Package SH = SNAPHAT(R) Temperature range 1 = 0 to 70C 6 = -40 to 85C (M4T32-BR12SH only) Shipping method blank = Ecopack(R) package, tubes TR = Ecopack(R) package, tape & reel For a list of available options (e.g., speed, package) or for further information on any aspect of this device, please contact the ST sales office nearest to you. 13/16 Environmental information 7 M4T28-BR12SH, M4T32-BR12SH Environmental information Figure 7. Recycling symbols This product contains a non-rechargeable lithium (lithium carbon monofluoride chemistry) button cell battery fully encapsulated in the final product. Recycle or dispose of batteries in accordance with the battery manufacturer's instructions and local/national disposal and recycling regulations. Please refer to the following web site address for additional information regarding compliance statements and waste recycling. Go to www.st.com/nvram, then select "Lithium Battery Recycling" from "Related Topics". 14/16 M4T28-BR12SH, M4T32-BR12SH 8 Revision history Revision history Table 7. Document revision history Date Revision Nov-1999 1 Changes First issue 01-Mar-2001 2 04-Jun-2001 2.1 Basic textual changes from reformatting activity Reformatted 10-Jul-2001 2.2 Changes references to "supervisor" from "controller;" clarify temperature characteristics 21-Jan-2002 2.3 Change to include crystal accuracy (Table 3); add text for SNAPHAT(R) insertion force tolerance and battery characteristics note 20-Aug-2002 2.4 Updated insertion/extraction data (Figure 2) 14-Mar-2003 2.5 Add pb-free note on page 1 20-Nov-2008 3 Reformatted document; updated cover page, Section 5: Package mechanical data, Table 6; added Section 7: Environmental information. 15/16 M4T28-BR12SH, M4T32-BR12SH Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. (c) 2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 16/16