पिनआउट
RFID-RC522 रीडर (SPI) पिनआउट
पिन
- SDA (SPI SS — also I2C data in other modes)
- SCK
- MOSI
- MISO
- IRQ (unused in most sketches)
- GND
- RST
- 3.3V supply — logic is NOT 5V tolerant per the MFRC522 datasheet: use a 3.3V MCU or level shifting
- Reads 13.56MHz MIFARE cards and tags
विनिर्देश
| चिप | NXP MFRC522 |
|---|---|
| आवृत्ति | 13.56 MHz |
| Supported cards | ISO/IEC 14443 A, MIFARE Classic/Ultralight |
| सप्लाई वोल्टेज | 3.3 V |
| लॉजिक लेवल | 3.3 V (not 5 V tolerant per datasheet) |
| Read distance | Up to ≈ 5 cm (antenna and tag dependent) |
| इंटरफ़ेस | SPI up to 10 Mbit/s (chip also supports I2C, UART) |
| आकार | ≈ 60 × 40 mm |
