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M4T28-BR12SH1 데이터시트(PDF) 1 Page - STMicroelectronics |
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M4T28-BR12SH1 데이터시트(HTML) 1 Page - STMicroelectronics |
1 / 7 page 1/7 November 1999 M4TXX-BR12SH TIMEKEEPER SNAPHAT (Battery & Crystal) s Provides Battery Backup Power for Non-Volatile TIMEKEEPERs and Controllers in the SNAPHAT SOIC Package s Removable Battery Avoids Heat Associated with Surface Mount Process s Snaps Directly onto Surface-Mounted SNAPHAT SOIC s Choice of Battery Capacities – M4T28-BR12SH = 48 mAh – M4T32-BR12SH = 120 mAh s Keyed Insertion to Insure Proper Assembly s Removable for Replacement and Proper Disposal s Available in Tubes or Tape & Reel s For Use with the 28 and 44 pin SOIC Versions of the TIMEKEEPER Product Families DESCRIPTION The M4Txx-BR12SH SNAPHAT top is a detach- able lithium power source for ST’s non-volatile TIMEKEEPER surface mount SOIC (MH) pack- age (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 avoids the battery and crystal from having to be exposed to the high tem- peratures of the surface mount process. SNAPHAT (SH) Battery & Crystal Figure 1. Logic Diagram AI02528 SNAPHAT VBAT– VBAT+ X1 X2 |
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