Description of the Block Diagram:graph TD; A[Microcontroller] -->|SPI/I2C/UART| B(MFRC522 RFID Module) B -->|SPI/I2C/UART| A; C[RFID Tag/Card] -.-> B; D[Power Supply<br>3.3V] --> B; E[Ground] --> B; A -->|Digital Output| F["LED Indicator<br>(Optional)"]; A -->|Digital Output| G["Buzzer<br>(Optional)"]; classDef mfrc522 fill:#f9f,stroke:#333,stroke-width:2px; class B mfrc522;
Table
| IC Designator | Attached Capacitors | Power Net Voltage | Cap Voltage Rating | Cap Value | Status |
|---|---|---|---|---|---|
| U1 | None | 3.3V | N/A | N/A | WARNING No decoupling capacitors are attached. |
RC522 RFID
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hung27102000
copilot
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