Overview
The MFRC52202HN1Z, produced by NXP USA Inc., is a highly integrated reader/writer IC designed for contactless communication at 13.56 MHz. This component supports ISO/IEC 14443 A/MIFARE and NTAG protocols, making it versatile for various RFID applications. The MFRC522 is not recommended for new designs, with the CLRC663 recommended instead, but it remains a robust solution for existing projects and legacy systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Frequency | - | - | 13.56 | - | MHz |
| Operating Voltage | - | 2.5 | 3.0 | 3.3 | V |
| Operating/Standby Current | - | 13 | - | 26/10-13 | mA |
| SPI Bus Speed | - | - | - | 10 | Mbit/s |
| I2C-Bus Interface Speed | Fast Mode | - | - | 400 | kBd |
| I2C-Bus Interface Speed | High-Speed Mode | - | - | 3400 | kBd |
| RS232 Serial UART Speed | - | - | - | 1228.8 | kBd |
| FIFO Buffer Size | - | - | - | 64 | bytes |
| Package Type | - | - | - | HVQFN32 | - |
Key Features
- Supports ISO/IEC 14443 A/MIFARE and NTAG protocols.
- Internal transmitter capable of driving a reader/writer antenna without additional active circuitry.
- Multiple host interfaces: SPI up to 10 Mbit/s, I2C-bus up to 400 kBd in Fast mode and up to 3400 kBd in High-speed mode, RS232 Serial UART up to 1228.8 kBd.
- FIFO buffer for fast and convenient data transfer.
- Flexible interrupt modes and programmable timer.
- Internal oscillator for connection to a 27.12 MHz quartz crystal.
- Power-down by software mode and hard reset with low power function.
- CRC coprocessor and programmable I/O pins.
- Internal self-test and voltage monitor & power-on detect.
Applications
- Access control systems.
- Public transportation ticketing systems.
- Smart home automation.
- Inventory management and tracking.
- Healthcare and medical device identification.
- Automotive systems for keyless entry and immobilizers.
Q & A
- What is the operating frequency of the MFRC522?
The MFRC522 operates at a frequency of 13.56 MHz.
- What protocols does the MFRC522 support?
The MFRC522 supports ISO/IEC 14443 A/MIFARE and NTAG protocols.
- What are the supported host interfaces of the MFRC522?
The MFRC522 supports SPI, I2C-bus, and RS232 Serial UART interfaces.
- What is the typical operating distance of the MFRC522 in Read/Write mode?
The typical operating distance is up to 50 mm, depending on the antenna size and tuning.
- Is the MFRC522 recommended for new designs?
No, the MFRC522 is not recommended for new designs. Instead, the CLRC663 is recommended.
- What is the package type of the MFRC522?
The MFRC522 comes in a HVQFN32 package.
- Does the MFRC522 have an internal oscillator?
- What is the FIFO buffer size of the MFRC522?
The FIFO buffer size is 64 bytes.
- Does the MFRC522 support power-down by software?
- What are some common applications of the MFRC522?
