Instructions

Contactless Card Read/Write Module（QM-201C-HF）User’s
Manual
c)BlockHeaderSTX=0x02,BlockEndETX=0x03.Fromheadertoend,but
notincludetheheaderSTXandtheendETX,ifthereis0x02,0x03
or 0x10 , then must add 0x10 before it.
d)Block Header STX=0x02.
e)PackageLength:thebytefromLengthitselftoChecksum,butnot
include the added byte 0x10 due to 0x02,0x03 or 0x10.
f)Command:RefertotheCommandList.WhentheMCUsendthecommand
to the module, the module send back this command to the MCU.
g)Status:Operation result. Success: 0x00. Fail: 0xFF.
h)During the communication, command content.
i)CheckSum:XORresultfrom[Length]tothenlastbyteof[Content],
but not include the added byte 0x10 due to 0x02,0x03 or 0x10.
j)Block End ETX=0x02.
5.2 IIC Protocol
1) Format of TXD(MCU →
Q
M-201C-
H
F
Module)
[Address of
module]（W/R）
[LEN] [CMD] [DATA] [CHK]
CheckSum
1
Content
Write：0xA0
The
Command Content of
n bytes
Package Length
Read：0xA1
Num of
Byte
1 1 1 n
Table 4
a) Address of module (W/R)：
b) When Write to module, the Address is 0xA0.
c) When Read from module, the Address is 0xA1.
d) Package Length: the byte from Length itself to Checksum.
e) Command: Refer to the Command List.
f) The Content of n bytes: the parameter.
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