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M41ST87YMX6TR Datasheet(PDF) 43 Page - STMicroelectronics |
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M41ST87YMX6TR Datasheet(HTML) 43 Page - STMicroelectronics |
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43 / 48 page  M41ST87Y, M41ST87W DC and AC parameters 43/48 Figure 27. Power down/up mode AC waveforms 4. Outputs deselected. 5. External SRAM must match RTC supervisor chip VCC specification. 6. For rechargeable backup, VBAT (max) may be considered VCC. 7. For PFO1 and PFO2 (if PFOD = '0'), SQW/FT (if SQWOD = '0'), and TPCLR pins (CMOS). 8. Conditioned output (ECON) can only sustain CMOS leakage current in the battery backup mode. Higher leakage currents will reduce battery life. 9. TPCLR output can source –300 µA (typ) for VBAT = 2.9 V. 10. For IRQ/OUT, SQW/FT (if SQWOD = '1'), PFO1 and PFO2 (if PFOD = '1'), RST, SDA, and F32k pins (open drain). AI07085 VCC INPUTS (PER CONTROL INPUT) OUTPUTS DON'T CARE HIGH-Z tF tFB tR tPD tRB VALID VALID (PER CONTROL INPUT) RECOGNIZED RECOGNIZED VPFD (max) VPFD (min) VSO trec RST ECON PFO VALID VALID |
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