Senstech Sdn Bhd U02 Users Manual
1／20
Product Name
MM Chip Reader / Writer module [UHF]
Product Number
MMRW-MD-U01
MMRW User Manual
FEC International (M) SDN BHD
2nd Nov. 2011
2／20
Contents
1 Introduction ..........................................................................................................................................................3
2 Usage Important Points .........................................................................................................................................3
3 Key features .........................................................................................................................................................3
4 Reader/writer module package content ....................................................................................................................4
5 Connections..........................................................................................................................................................5
6 Function and use ...................................................................................................................................................5
7 Hardware .............................................................................................................................................................6
7.1 Transmitting circuit .......................................................................................................................................6
7.2 Receiving circuit / comparator circuit .............................................................................................................7
7.3 Microprocessor .............................................................................................................................................8
7.4 Microprocessor’s pin assignment ................................................................................................................. 10
7.5 RF antenna ................................................................................................................................................. 10
8 Firmware............................................................................................................................................................ 11
9 Firmware Writing Procedures............................................................................................................................... 12
9.1 Firmware writing application start-up and installation .................................................................................... 12
9.2 Firmware writing ........................................................................................................................................ 12
10 Product general specification................................................................................................................................ 16
11 Annexes ............................................................................................................................................................. 17
11.1 Schematics ................................................................................................................................ ................. 17
11.2 List of components ..................................................................................................................................... 18
11.3 Antenna layout ........................................................................................................................................... 20
12 FCC STATEMENT ............................................................................................................................................. 20
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1 Introduction
This MMRW-MD-U01 is a reader/writer module complied with multiband RFID chip dubbed as “MM Chip”.
This document contains the instructions to use and evaluate the functions and the performance of this device.
For external interface connection, either USB or UART serial connection can be applied, which is applicable to
almost all of the controller systems.
For more details on the product specifications, please refer to “MMRW-U02 Product Specification Document”.
2 Usage Important Points
[Regulation/Standards]
This product follows the guidance for reading/writing communication equipment. It is important to check the
regulation/standard and the seller or user of the intended country.
[Points to take notes before using the product]
1) This product is designed for general use and should not be utilized with application such as medical
appliances related to human life or in space satellite environment which requires high reliability. Our
company will not be responsible for any accidents caused from the said events, such as personal accident,
fire accident or any public related accident.
2) This product is emitting radio wave which can affect medical appliances such as the pacemaker device.
3) Do not place this product near any radio device since it can cause interference.
4) Do not touch the connector terminal as it can result in electrical shock and will eventually destroy the
product.
3 Key features
Support MM2 chip air interface protocol and commands
Light weight, compact size module
UART serial and USB communication available
RF output: 100mW
Operation voltage: 5VDC
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Top side
Back side
Min-USB
UART
Antenna connector
Antenna
connector
5pin for F/W writing
4 Reader/writer module package content
[RFID reader / writer board: MMRW-MD-U01]
USB (Mini B)
Packet communication complies with USB2.0/1.1
UART serial
Communication speed
Variable according to a command (default：9,600bps)
(1,200/2,400/4,800/9,600/19,200/38,400/57,600bps)
Data bit: 8bit
Stop bit: 1bit
Parity bit: N/A
Flow control: N/A
[Board antenna: MMATU-OCA]
[CD with SDK and documentation]
Included in the CD are SDK and related documents, product specifications and various manuals. For more details,
please see “readme.txt” included in the CD.
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No.
Signal name
I/O
Content
1
VCC
-
Provide DC 5V (+/-0.25V)
2
GND
-
GND
3
TXD
OUT
UART serial signal output (LV-TTL)
4
RXD
IN
UART serial signal input (LV-TTL)
5 Connections
The first step is to connect the components. Connect antenna board to the RFID reader / writer board using the
connector. Terminal and reader/writer can be connected by USB or UART serial port.
Pin assignment for UART serial is stated in the table below. Please prepare a harness cable for the connection to
device terminal.
[Pin assignment]
6 Function and use
The equipment is ready to be operated once all connections are completed.
Next, equipment operating with SDK package will be explained. SDK Package is prepared for application
development of MMRW series. SDK Package contains demo software, USB driver, USB communication library,
and sample source code. For further details, please refer to “Demo Software Manual” before using MMRW
demo software.
Please refer to “MMRW Command Library Function Specification” to develop application.
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Fig 1
Rx carrier out
LBT carrier out
Tx data in
U11-14pin VCO oscillator feedback
XTX SW
U5-12pin VCO Control voltage
⑤
7 Hardware
7.1 Transmitting circuit
Fig1 is Transmitting circuit. When VCO Control voltage from U11 PLL Synthesizer LMX2433 12pin is input,
VCO SV910ER1418 of U18 oscillate the 919.0MHz - 923.0MHz (Malaysia band, waveform ①). C53 output
is an oscillator feedback out for U15. Oscillating out can control Gain with Gain Control Amplifier of U20 μ
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