Data Sheet

AN1012 List of figures
Doc ID 6395 Rev 4 5/33
List of figures
Figure 1. Standard ZEROPOWER, TIMEKEEPER, supervisor, and serial RTC packages. . . . . . . . . 1
Figure 2. Four-transistor (4T) SRAM cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. (A) BR1225 discharge rate and (B) BR1632 discharge rate. . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Predicted battery storage life versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5. Block diagram of a TIMEKEEPER
®
device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. M48T02/12 data retention lifetime vs. temperature (120 mAh, 100% battery backup). . . . 14
Figure 7. M48T08/18 data retention lifetime vs. temperature (120 mAh, 100% battery backup). . . . 15
Figure 8. M48T58 data retention lifetime vs. temperature (48 mAh, 100% battery backup) . . . . . . . 16
Figure 9. M48T58 data retention lifetime vs. temperature (120 mAh, 100% battery backup) . . . . . . 16
Figure 10. M48T35/37V/37Y data retention lifetime vs. temperature (48 mAh, 100% battery backup) 17
Figure 11. M48T35/37V/37Y data retention lifetime vs. temperature (120 mAh, 100% battery
backup) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17