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Hidden Jade Memory Implanter
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Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Digi-Key | $8.77 | |
| LCSC | $6.80 | |
| Mouser | $10.27 | |
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- U1 will be used to step down a higher voltage to a level suitable for U2 (e.g., from a battery or external supply).
- The target voltage for U2 (STM32F303VBT6) is 3.3V, which is within its typical operating range.
Connections Overview:-
U1 to U2 Power Supply:
- Ensure U1 (MP2338GTL-Z) is configured to output 3.3V at its
- Connect
-
Ground Connection:
- Connect
-
Enable the DC-DC Converter:
- If you want the microcontroller to control the power supplied by U1, connect a GPIO pin from U2 to
- Alternatively, if you always want U1 enabled when power is present, connect
-
Bootstrapping and Soft-Start (Optional):
- Connect
- Connect
Connection List:SWpin by correctly setting the feedback resistors connected to itsFBpin (Pin 8). Since I don't have the exact values you're using, you'll need to follow the MP2338GTL-Z datasheet to calculate them based on your desired output voltage.U1:SWtoU2:VDD(Pins 28, 50, 75, 100) for power distribution.U1:GND(Pin 4) toU2:VSS(Pins 19, 49, 74, 99) to establish a common ground.U1:EN. For simplicity, assume any GPIO pin from U2 (e.g.,PA5) can be used. Make the connectionU1:ENto, for example,U2:PA5to allow software control of the power module.U1:ENdirectly toU1:VINthrough a resistor (10kΩ is a common choice).U1:BSTto the bootstrap capacitor and diode as per MP2338GTL-Z datasheet specifications for stable operation.U1:SSto a capacitor (to ground) to set the soft-start time, preventing inrush current at power-up.U1:SWtoU2:VDD,U2:VDD,U2:VDD, andU2:VDD.U1:GNDtoU2:VSS,U2:VSS,U2:VSS, andU2:VSS.U1:ENtoU2:PA5.