copilot

copilot

1. Check the datasheet of the ABM3-12.000MHZ-D2Y-T crystal oscillator to find the recommended load capacitance.
2. Calculate the required load capacitor values using the formula: C_load_capacitor = (C_recommended_load - C_stray) / 2 where C_stray is the stray capacitance, which is typically between 2-5 pF.
3. Add two capacitors with the calculated values close to the crystal oscillator pins and connect them between the oscillator pins (P1, P2) and the ground.
4. Connect the crystal oscillator to the RP2040 microcontroller by connecting Y1:P1 to U1:XIN and Y1:P2 to U1:XOUT.

nico

copilot

1. Determine the purpose of each capacitor in the circuit (e.g., decoupling, filtering, load capacitors for the crystal, etc.).
2. Identify the points in the circuit where the capacitors need to be connected based on their purpose.

• Connect one end of C1 to the VDD pin of U1 (RP2040) and the other end to the nearest ground.
• Connect one end of C2 to the VO pin of U2 (AMS1117-3.3) and the other end to the nearest ground.

copilot

1. Connect the SPI pins:
   • Connect U3 ~CS (Chip Select) to U1 QSPI_CSN (Quad SPI Chip Select)
   • Connect U3 CLK (Clock) to U1 QSPI_SCLK (Quad SPI Clock)
   • Connect U3 D0 (Data 0) to U1 QSPI_SD0 (Quad SPI Data 0)
   • Connect U3 D1 (Data 1) to U1 QSPI_SD1 (Quad SPI Data 1)
   • Connect U3 WP (Write Protect) to U1 QSPI_SD2 (Quad SPI Data 2)
   • Connect U3 HOLD (Hold) to U1 QSPI_SD3 (Quad SPI Data 3)
2. Connect power and ground:
   • Connect U3 VCC to a 3.3V supply (you can use the output of U2, which is connected to U1 IOVDD)
   • Connect U3 GND to the ground net (Net 3 in your project)
3. Add decoupling capacitors close to the VCC and GND pins of the flash memory. A 100nF capacitor is recommended. Connect the capacitor between VCC and GND.

nico

copilot

copilot

copilot

1. Add two 5.1kΩ resistors (you can use 0603 SMD package for consistency with other components in the project).
2. Connect one end of each resistor to the CC1 and CC2 pins of J1, respectively.
3. Connect the other end of both resistors to the 3.3V power supply (U2 VO).

nico

copilot

1. Connect one end of R3 (5.1kΩ) to the CC1 pin of J1 (USB-C Receptacle).
2. Connect one end of R4 (5.1kΩ) to the CC2 pin of J1 (USB-C Receptacle).
3. Connect the other ends of R3 and R4 to the 3.3V power supply (U2 VO).

copilot

1. Connect J1's VBUS pin to the input pin (VI) of the voltage regulator U2.
2. Connect the output pin (VO) of the voltage regulator U2 to the VREG_VIN pin of the RP2040 (U1).
3. Connect the ground pins (GND) of J1, U2, and U1 together.
4. Connect J1's D+ (D+) and D- (D-) pins to the USB_DP and USB_DM pins of the RP2040 (U1), respectively.
5. Optionally, connect the shield pin of J1 to the ground (GND) if you want to ground the shield.

Net 0 connects U2 VO - U1 IOVDD:P1, U2 VO - U1 IOVDD:P1, U1:IOVDD, U1:IOVDD, U1:IOVDD, U1:IOVDD, U1:IOVDD, U1:IOVDD, U2:VO
Net 1 connects U1:SWD
Net 2 connects C2:P2, Y1:P2, Y1 P2 - U1 XOUT:P1, Y1 P2 - U1 XOUT:P1, U1:XOUT
Net 3 connects J1:GND, U2 GND -  GND:P1, U2 GND -  GND:P1, U2:GND, U1:TESTEN, U1:GND, C5:P1, C3:P1, C6:P1, C2:P1, C1:P1, C7:P1, J1:SHIELD
Net 4 connects U1:VREG_VIN, C3:P2, U2:VO
Net 5 connects Y1 P1 - U1 XIN:P1, Y1 P1 - U1 XIN:P1, C1:P2, Y1:P1, U1:XIN
Net 6 connects U1:ADC_AVDD, C6:P2
Net 7 connects C7:P2, U1:USB_VDD
Net 8 connects U1:DVDD, C5:P2
Net 9 connects U1:RUN
Net 10 connects U1:SWCLK
Net 11 connects J1:VBUS, U2:VI
Net 12 connects J1:D+, U1:USB_DP
Net 13 connects J1:D-, U1:USB_DM

copilot

1. A 1μF capacitor connected between VREG_VIN and GND.
2. A 1μF capacitor connected between VREG_VOUT and GND.
3. A 100nF capacitor connected between IOVDD and GND for each IOVDD pin (there are 5 IOVDD pins).
4. A 100nF capacitor connected between DVDD and GND.
5. A 100nF capacitor connected between ADC_AVDD and GND.
6. A 4.7μF capacitor connected between USB_VDD and GND (if using USB).

copilot

1. Add two 22 ohm resistors to your schematic (e.g., R1 and R2).
2. Connect R1 between J1's D+ pin and U1's USB_DP pin.
3. Connect R2 between J1's D- pin and U1's USB_DM pin.

copilot

nico

copilot

1. Connect the input voltage to the AMS1117-3.3:
   • Connect the positive terminal of your power source (e.g., battery or power supply) to the "VI" pin (pin 1) of the AMS1117-3.3 (U2).
   • Connect the negative terminal of your power source to the "GND" pin (pin 2) of the AMS1117-3.3 (U2).
2. Connect the output of the AMS1117-3.3 to the RP2040:
   • Connect the "VO" pin (pin 4) of the AMS1117-3.3 (U2) to the "IOVDD" (3.3V) pin(s) of the RP2040 (U1).
   • Connect the "GND" pin (pin 2) of the AMS1117-3.3 (U2) to the "GND" pin(s) of the RP2040 (U1).
3. Connect other required pins of the RP2040:
   • Connect a 12 MHz crystal oscillator (Y1) between the "XIN" and "XOUT" pins of the RP2040 (U1) to provide a clock source.
   • Connect the "RUN" pin to the "GND" through a 10kΩ resistor to enable the RP2040 (U1).

copilot

1. Connect DVDD (U1:DVDD) to a decoupling capacitor (C5) and then to the 3.3V power supply. Connect C5:P1 to U1:DVDD and C5:P2 to the 3.3V power supply (Net 1).
2. Connect ADC_AVDD (U1:ADC_AVDD) to a decoupling capacitor (C6) and then to the 3.3V power supply. Connect C6:P1 to U1:ADC_AVDD and C6:P2 to the 3.3V power supply (Net 1).

copilot

1. Add a normally open (NO) tactile pushbutton to your schematic.
2. Connect one terminal of the pushbutton to the RUN pin (U1:RUN) of the RP2040.
3. Connect the other terminal of the pushbutton to the ground (GND) net.

nico

copilot

1. Add a 10kΩ resistor (or any value between 4.7kΩ and 100kΩ) to your schematic.
2. Connect one terminal of the resistor to the RUN pin (U1:RUN) of the RP2040.
3. Connect the other terminal of the resistor to the 3.3V supply (U2:VO) or the IOVDD net.