ib technology

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Data Sheet

RWD_QT.pdf

19 Pages

Last Revised 09/08/11

Micro RWD Quad-Tag Reader

The MicroRWD “QT” (Quad-Tag) version is a complete 125kHz reader solution for Hitag 1,

Hitag S256/S2048 (Plain Memory mode), Hitag 2 (Password mode), EM400X/4102 and

MCRF200I/123 passive RFID transponder types. The solution only needs a 700 µH antenna

coil connected and 5v DC supply to be a fully featured read/write system. The module

provides internal EEPROM memory for holding lists of authorised identity codes, a manual

override switch facility and has LED drives to give visual indication of acceptance.

The MicroRWD also has a TTL level RS232 interface that allows a host system to

communicate with the RWD if necessary, so that system features can be customised,

configurations changed and tag read/write data handled by the host system. The MicroRWD

QT version uses the same basic hardware as previous MicroRWD versions but has a larger

memory microcontroller to accommodate the software for reading four different tag types.

The QT version is pin-for-pin, host interface and command protocol compatible with the

individual H1/S, H2, EM400X and MCRF200 reader versions. Functionally, the only

difference is that the MicroRWD QT internal EEPROM parameter map has been changed to

accommodate all the parameters from all the individual versions.

A new command code (ASCII "v", 0x76) plus a parameter byte can be used to select the three

main transponder types, a parameter in the EEPROM map further selects between EM400X

and MC200/123 types.

TTL

RS232 I/F

Tx

Rx

CTS

LOAD

Screen

(if applicable)

700 uH Antenna

(34 SWG wire

)

25ma (sink) O/P drives

Micro

RWD

QT

Green LED

Red LED

1k

SW overri

de

+5v

0v GND

+5v DC supply

25ma (sink) (O/P) drives

+5v

Micro RWD Chip Module (not to scale)

24 pin DIL package (32 mm x 18 mm)

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MicroRWD QT combined Hitag 1/S, Hitag 2, EM400X and MCRF200/123 reader device