RWD_QT Datasheet, PDF (7/19 Pages) rfsolutions.ltd – The MicroRWD “QT” (Quad-Tag) version is a complete 125kHz reader solution for Hitag 1,

ib technology
For example:-
H1 type selected, MESSAGE command reply =
“b IDE RWD H1 (SEC_COM V1.xx) DD/MM/YY) IB Technology accepts no liability for
the use of this product in any end application” 0x00
H2 type selected, MESSAGE command reply =
“a IDE RWD H2 (SEC_COM V1.xx) DD/MM/YY) IB Technology accepts no liability for
the use of this product in any end application” 0x00
H400X/MC200 type selected, MESSAGE command reply =
“c IDE RD H400X/MC200 (SEC_COM V1.xx) DD/MM/YY) IB Technology accepts no
liability for the use of this product in any end application” 0x00
Program EEPROM
The Micro RWD has some internal EEPROM for storing system parameters such as
passwords and authorised identity codes. This command sequence allows individual bytes of
the EEPROM to be programmed with new data. Note that due to the fundamental nature of
these system parameters, incorrect data may render the system temporarily inoperable.
Command:
Argument1:
Argument2:
B7
B0
01010000
NNNNNNNN
DDDDDDDD
Acknowledge: 1 1 X F X X X F
(ASCII “P”, 0x50)
(N = EEPROM memory location 0 - 255)
(D = data to write to EEPROM)
(F = Status flags)
Internal EEPROM memory map
Byte 0:
Byte 1:
Byte 2:
Byte 3:
Byte 4:
Byte 5:
Byte 6:
Byte 7:
Byte 8:
Byte 9:
Byte 10:
Byte 11:
Byte 12:
Byte 13:
Byte 14:
Byte 15:
Byte 16:
Byte 17:
Byte 18:
Byte 19:
Tag Polling Rate (x 2.5ms), (default = 0x14, 20 (dec) approx (50ms)
RF ON/OFF lock byte (0x55 = RF ON, anything else = OFF, normally set to 0x55)
Reserved (internal checksum value) – do not use
H1 Encryption ON/OFF control byte (0x00 = OFF)
) H1 32 bit Encryption Seed (M.S byte)
)
)
) (L.S byte)
H2 PASSWORD_RWD (32 bit password sent to HT2) – default “M”
H2 PASSWORD_RWD “I ”
H2 PASSWORD_RWD “K”
H2 PASSWORD_RWD “R”
Reserved (not used)
H2 PASSWORD_TAG (24 but reply from HT2) - default 0xAA
H2 PASSWORD_TAG "H"
H2 PASSWORD_TAG "T"
EM400X Option Byte, 0x00 = MC200, 0x01 = H400x (default)
Reader Type (0x02 = H1 default)
Reserved (not used)
Reserved (not used)
7