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M4T28-BR12SH1 Datasheet(PDF) 4 Page - STMicroelectronics |
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M4T28-BR12SH1 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 28 page ![]() List of figures M48T35AV 4/28 List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. DIP connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3. SOIC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 5. Read mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 6. Write enable controlled, write mode AC waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 7. Chip enable controlled, write mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 8. Checking the BOK flag status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. Crystal accuracy across temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 10. Clock calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 11. Supply voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 12. AC measurement load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 13. Power down/up mode AC waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 14. PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline . . . . . . . . . . . . . . . . . 22 Figure 15. SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT, package outline . . . . 23 Figure 16. SH – 4-pin SNAPHAT housing for 48mAh battery & crystal, package outline . . . . . . . . . . 24 Figure 17. SH – 4-pin SNAPHAT housing for 120mAh battery & crystal, pack. outline. . . . . . . . . . . . 25 |
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