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M48T201Y 数据表(PDF) 5 Page - STMicroelectronics |
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M48T201Y 数据表(HTML) 5 Page - STMicroelectronics |
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5 / 37 page ![]() M48T201Y, M48T201V List of figures 5/37 List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. SOIC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3. Hardware hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 4. GCON timing when switching between RTC and external SRAM . . . . . . . . . . . . . . . . . . . . 11 Figure 5. Read cycle timing: RTC and external RAM control signals . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 6. Write cycle timing: RTC and external RAM control signals. . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 7. Alarm interrupt reset waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 8. Backup mode alarm waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 9. RSTIN1 and RSTIN2 timing waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 10. Crystal accuracy across temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 11. Calibration waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 12. Supply voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 13. AC testing load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 14. Power down/up mode AC waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Figure 15. SOH44 – 44-lead plastic small outline, SNAPHAT®, package outline . . . . . . . . . . . . . . . . 31 Figure 16. SH – 4-pin SNAPHAT® housing for 48 mAh battery & crystal, package outline. . . . . . . . . 32 Figure 17. SH – 4-pin SNAPHAT® housing for 120 mAh battery & crystal, pack. outline . . . . . . . . . . 33 Figure 18. Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 |
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