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PCF85363ATL/AX 数据表(PDF) 43 Page - NXP Semiconductors |
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PCF85363ATL/AX 数据表(HTML) 43 Page - NXP Semiconductors |
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43 / 86 page ![]() NXP Semiconductors PCF85363A Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input, and I2C-bus aaa-010426 internal power supply cleared via interface BSF Vth = 1.5 V VDD (= 0 V) VBAT = 1.2 V VDD INTA battery mode indication interface active interface inactive interface active I2C Figure 25. Switching at the higher of VBAT or Vth 7.11.3.4 Switching at the lower of VBAT and Vth level, BSM[1:0] = 11 With this mode switching takes place when VDD falls below the lower of Vth or VBAT. In Figure 26, an example is given where the threshold is set to 1.5 V and a single cell battery is connected to VBAT. In this example, switching to the battery voltage takes place when VDD falls below VBAT. aaa-010429 internal power supply cleared via interface BSF Vth = 1.5 V VDD (= 0 V) VBAT = 1.2 V VDD INTA battery mode indication interface active interface inactive interface active I2C Figure 26. Switching at the lower of VBAT or Vth PCF85363A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 3.1 — 18 June 2021 43 / 86 |
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