RFID
来自Jack's Lab
（版本间的差异）
(→Overview) |
(→MFRC522) |
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=== MFRC522 === | === MFRC522 === | ||
| − | * [http://www.nxp.com/documents/data_sheet/MFRC522.pdf RC522] | + | The MFRC522 supports all variants of the MIFARE Mini, MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus RF identification protocols. |
| + | |||
| + | '''Features:''' | ||
| + | |||
| + | * Support RFID frequency 13.56MHz | ||
| + | * Supports ISO/IEC 14443 A/MIFARE and NTAG | ||
| + | * Typical operating distance in Read/Write mode up to 50 mm depending on the antenna size and tuning | ||
| + | * Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode | ||
| + | * Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd | ||
| + | * Supports MFIN/MFOUT | ||
| + | * SPI up to 10 Mbit/s | ||
| + | * I2C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode | ||
| + | * RS232 Serial UART up to 1228.8 kBd, with voltage levels dependant on pin voltage supply | ||
| + | * Power-down by software mode | ||
| + | * Internal oscillator for connection to 27.12 MHz quartz crystal | ||
| + | * 2.5 V to 3.3 V power supply | ||
| + | |||
| + | * [http://www.nxp.com/documents/data_sheet/MFRC522.pdf RC522 Datasheet] | ||
<br><br> | <br><br> | ||
2016年11月12日 (六) 12:33的版本
目录 |
1 Overview
2 Chip
2.1 EM4095
Use in an RFID basestation to perform the following functions:
- antenna driving with carrier frequency - AM modulation of the field for writable transponder - AM demodulation of the antenna signal modulation induced by the transponder communicate with a microprocessor via simple interface.
Features:
- Integrated PLL system to achieve self adaptive carrier frequency to antenna resonant frequency
- No external quartz required
- 100 to 150 kHz carrier frequency range
- Multiple transponder protocol compatibility (e.g. EM400X, EM4050, EM4150, EM4070, EM4170, EM4069)
- Sleep mode 1µA
- USB compatible power supply range
- Small outline plastic package SO16 or PSOP2 16
http://www.emmicroelectronic.com/products/rf-identification-security/rf-reader-ics/em4095
2.2 MFRC522
The MFRC522 supports all variants of the MIFARE Mini, MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus RF identification protocols.
Features:
- Support RFID frequency 13.56MHz
- Supports ISO/IEC 14443 A/MIFARE and NTAG
- Typical operating distance in Read/Write mode up to 50 mm depending on the antenna size and tuning
- Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode
- Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd
- Supports MFIN/MFOUT
- SPI up to 10 Mbit/s
- I2C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode
- RS232 Serial UART up to 1228.8 kBd, with voltage levels dependant on pin voltage supply
- Power-down by software mode
- Internal oscillator for connection to 27.12 MHz quartz crystal
- 2.5 V to 3.3 V power supply
3 Antenna
- http://ww1.microchip.com/downloads/en/AppNotes/00678b.pdf
- http://ww1.microchip.com/downloads/en/appnotes/00710c.pdf
- http://www.sonnetsoftware.com/support/files/appnote/SAN-206A%20RFID%20Antenna%20Design%200602.pdf
- https://www.sabanciuniv.edu/mdbf/telecom/eng/RWL/report.pdf
4 Reference
