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MMA5124LCWR2 Datasheet(PDF) 22 Page - NXP Semiconductors |
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MMA5124LCWR2 Datasheet(HTML) 22 Page - NXP Semiconductors |
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22 / 59 page  Sensors 22 NXP Semiconductors MMA51xxL 3.3.1 VBUF, VREG, and VREGA Regulator Capacitor The internal regulators require an external capacitor between each of the regulator pins (VBUF, VREG, or VREGA) and the associated the VSS / VSSA pin for stability. Figure 1 shows the recommended types and values for each of these capacitors. 3.3.2 VCC, VBUF, VREG, and VREGA Under-Voltage Monitor A circuit is incorporated to monitor the supply voltage (VCC) and all internally regulated voltages (VBUF, VREG, and VREGA). If any of internal regulator voltages fall below the specified under-voltage thresholds in Section 2, the device will be reset. If VCC falls below the specified threshold, PSI5 transmissions are terminated for the present response. Once the supply returns above the threshold, the device will respond to the next detected sync pulse. Reference Figure 10. Figure 10. VCC Micro-Cut Response VCC POR VREG Time VBUF VREGA VCC under-voltage detected Response Terminated IDATA VCC micro-cut occurs |
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