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AN3342 Datasheet(PDF) 6 Page - STMicroelectronics |
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AN3342 Datasheet(HTML) 6 Page - STMicroelectronics |
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6 / 39 page  Hardware requirements summary AN3342 6/39 Doc ID 18461 Rev 3 1 Hardware requirements summary To build an application around an STM8TL5xxx device, the application board should provide the following features: ● Power supply (mandatory) ● Reset management (optional) ● ProxSense line management (optional) ● Debugging tool support: Single wire interface module (SWIM) connector (optional) 2 Power supply 2.1 Power supply overview The STM8TL5xxx needs to be powered by a 1.65 V to 3.6 V external source. An on-chip power management system provides the constant digital supply to the core logic, both in normal and low power modes. This ensures that the logic consumes a constant current level over the voltage range. It is also capable of detecting voltage drops and generate a reset to avoid erratic behavior. The STM8TL5xxx device provides: ● One pair of power supply pins (VDD/VSS) for the main operating voltage (1.65 V to 3.6 V). ● Another pair of power supply pins (depending of package) (VDDIO/VSSIO) for the IOs (1.65 V to 3.6 V) The STM8TL5xxx device manages the supply voltage needed by the ProxSense interface by connecting a 1 µF capacitor low ESR ( 1 ) to the PXS_V REG pin (see Figure 1). |
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