IB Technology 13.56 MHz RWD Mifare Module

Products – Micro RWD MF (Mifare)

Low-cost proximity RFID reader module supporting Philips (ISO 14443A) Mifare 1k (S50), Mifare 4k (S70) and Mifare Ultralight transponders/cards.

The module is completely housed within a 24-pin DIP package (pin compatible with other modules) and only requires a 5v supply and a 1 micro-Henry antenna board to be fully featured read/write and tag acceptance system.

The RWD module has outstanding RF drive capability and has a read/write range to ISO card size tags of up to 10cm whilst maintaining reliable communication and high resilience to EMC corruption. This has been achieved through extensive software and hardware filtering and optimization techniques.

The RWD also has internal EEPROM memory for holding system parameters, security key codes, lists of authorized serial numbers and supports direct LED drives to give visual indication of acceptance. Up to 50ma of drive current is also provided as an output that can be used to switch external loads.

Download Micro RWD MF (Mifare) data sheet

Different versions are available which use the spare I/O pins to output data as clock/data signals or Weigand protocol signals (in addition to standard TTL RS232 interface).

Download Micro RWD MF (Weigand) data sheet

Data sheets, Application notes and Windows applications. (as supplied on CDROM)

Basic electrical specification without LEDs fitted and no auxiliary output drive.

Supported Transponders – Philips Mifare 1k (S50) (ISO 14443A)

Mifare 1k has 1024 bytes of read/write memory (4k version has 4096 bytes of memory) which is divided up into 16 segments (40 on 4k version), each secured by programmable key codes.

13.56 MHz, 8192 bit (1024 byte) read/write passive RFID transponder. Large memory size is organized as 16 sectors, each with it’s own security key codes and access conditions. This allows entirely different applications to use separate memory sectors with unique security keys. In addition, the Mifare cards use a three-pass authentication system and data encryption techniques to make the system very secure. For this reason Mifare cards are often used for financial or ticketing applications where privacy of data and reliable, secure data transactions are essential.

The higher frequency operation allows communication rates up to 106 kbaud.

Memory is organized as 16-byte Blocks. Groups of 4-Blocks are called Sectors, each having have unique security keys and access conditions. Block 0 contains a factory programmed 4-byte unique serial number (UID) together with other manufacturer and configuration information.

Data can be read/written to Blocks (16 bytes) in one operation. Mifare is widely accepted as the Market-leading technology for ISO14443A secure ticketing and access control applications (Transport for London Oyster card for example).

Mifare 1k data sheet

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Ultralight has a 256 byte read/write memory without the key code security. All Mifare cards have a unique serial number factory-programmed at the first location in memory.

13.56 MHz, 512 bit (64 byte) read/write passive RFID transponder.

Ultralight has the same basic communication protocol as Mifare 1k and 4k cards but does not have the same level of mutual authentication and CRYPTO protection.

For this reason Ultralight cards are used for simpler financial or ticketing applications and are often packaged as “paper tickets” for single use applications.

Memory is organised at 4 byte Pages with Pages 0 and 1 containing a factory programmed 7-byte unique serial number (UID) together with other manufacturer and configuration information.

The higher frequency operations allows communication rates up to 106 kbaud and combined with the flexible memory structure, Mifare Ultralight is a popular and low-cost read/write transponder type.

Data can be read/written to 4-byte Pages in one operation.

Mifare Ultralight data sheet

Compare with other supported tag types