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HOW TO COMPLETE THE CIRCUIT
pavi

pavi

@copilot HOW TO COMPLETE THE CIRCUIT
1y

copilot

To complete the circuit with the W25Q128FVPIQ TR flash memory chip you've specified, we'll need to establish both the power connections and the data interface it requires. Here's a simple guideline to follow, assuming you're interfacing this memory chip with a microcontroller (MCU) or similar device. We'll also assume some common peripherals and passive components that usually accompany a flash memory chip in a circuit.
Power Connections:
  • Connect U1:GND to the ground plane (GND).
  • Connect U1:VCC to a 3.3V power supply rail. The W25Q128FV operates with a supply voltage of 2.7V to 3.6V, so a 3.3V rail is typical.
Data Interface Connections (SPI):
Assuming you're using an SPI interface, as it's quite common for flash memory devices:
  • U1:~CS (Chip Select) - Connect to an MCU's GPIO pin designated for SPI chip select.
  • U1:D1 (Data Input) - Connect to the MCU's MOSI (Master Out Slave In) pin.
  • U1:D0 (Data Output) - Connect to the MCU's MISO (Master In Slave Out) pin.
  • U1:CLK (Clock) - Connect to the MCU's SCLK (Serial Clock) pin.
Additional Pin Connections:
  • U1:WP (Write Protect) - Connect to VCC via a pull-up resistor (e.g., 10kΩ) for normal operation. If write protection is required, you can control this pin with an MCU GPIO.
  • U1:HOLD - Also often tied to VCC via a pull-up resistor (e.g., 10kΩ) to ensure normal operation. It can be connected to an MCU GPIO if the HOLD function is needed.
  • U1:EP (Exposed Pad) - Should be soldered to a ground pad on the PCB to help with heat dissipation.
Example Connections:
  • Connect U1:GND to GND.
  • Connect U1:VCC to 3.3V power supply.
  • Connect U1:~CS to MCU:GPIO_x.
  • Connect U1:D1 to MCU:MOSI.
  • Connect U1:D0 to MCU:MISO.
  • Connect U1:CLK to MCU:SCLK.
  • Connect U1:WP and U1:HOLD to VCC via 10kΩ resistors.
  • Connect U1:EP to GND.
Assumptions:
  • You're using the SPI protocol for communication.
  • The MCU or controller used in your project operates at a compatible logic level (e.g., 3.3V).
  • Pull-up resistors for WP and HOLD pins are 10kΩ, a common value, but this can be adjusted based on your specific requirements or recommendations from the datasheet.
Additional Components:
Don't forget to add decoupling capacitors close to the VCC and GND pins of the W25Q128FV (e.g., a 0.1μF ceramic capacitor and a 10μF electrolytic/tantalum capacitor) to stabilize the power supply.
Please adjust any GPIO or pin assignments based on your specific MCU and circuit design. If you have a different communication protocol in mind or other components to consider, please let me know so we can refine the design together.
1y
U1
R2
Resistance
47k Ω
R1
Resistance
47k Ω
J1
R3
Resistance
47k Ω
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