Mitsumi WML-C103 User manual

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WML-C103_User_Manual
26.Jun, 2018
COMMERCIAL IN CONFIDENCE
This material may not in whole or part be copied, stored electronically or communicated to third parties
without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
WML- C103 User Manual
The purpose of this manual is to explain correct way how to integrate module WML-C103 to the end
product. t includes procedures that shall assist you to avoid unforeseen problems.
This manual presents information that shows how module and OEM product, where module integrated,
complies with regulations in certain regions. Any modifications, not expressly approved by the
manufacturer could void the authority to operate in these regions.
Content
1. General
2. Description
3. FCC Regulatory nformation
4. Canada, ndustrie Canada ( C)
1. General
This Bluetooth LE module has to be installed and used in accordance with the technical
description/installation instructions provided by the manufacturer.
This Bluetooth LE module is intended to be placed on the market in all States, where
the Bluetooth™ technology and the used frequency band is released.
For detail information concerning type approval of this module (e.g. where this module is
already pre-approved) please contact the manufacturer.
The system may only be implemented in the configuration that was authorized.
Note that any changes or modifications to this equipment not expressly approved by
the manufacturer could void the user’s authority to operate this equipment.

Page 2 of 8
WML-C103_User_Manual
26.Jun, 2018
COMMERCIAL IN CONFIDENCE
This material may not in whole or part be copied, stored electronically or communicated to third parties
without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
2.DESCRIPTION.
2.1 Model Name
WML-C103
2.2 Hardware: Version 1
This document describes the reference design for application as follows.
2. FEATURES
 Bluetooth Ver5.0
 Host nterface：UART
Frequency: 2402-2480MHz (World Wide)
 RF Channel band: 2MHz
RF Channel number: 40ch
 Data Rate: 1Mbps
 Output Power: 7 dBm(MAX) Sensitivity: -84dBm
 Supply Voltage: 3.0V±0.3V
 Current Consumption
Tx: 6 mA(MAX)@3.0V, Rx: 5mA(MAX) @3.0V
 Operating temperature: -30 to +85 degree C
 Module size: 8.0mm x 8.5mm x 2.0mm (Typ.)
2.4 APPLICATIONS
Lighting equipment, AI speaker etc.
2.5 ARCHITECTONICS
WML-C103 has Bluetooth chip, SP Flash Memory and Crystal inside.
UART interface is used for customer’s application.
Following figure shows Software Stack for WML-C103 and customer’s application
as example.

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WML-C103_User_Manual
26.Jun, 2018
COMMERCIAL IN CONFIDENCE
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without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
2.6 DIMENSIONS

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WML-C103_User_Manual
26.Jun, 2018
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without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
2.8 Spec
・Transmission/Reception Frequencies : unit [ MHz ]
ch Freq. ch Freq.
0 2402 20 2442
1 2404 21 2444
2 2406 22 2446
3 2408 23 2448
4 2410 24 2450
5 2412 25 2453
6 2414 26 2454
7 2416 27 2456
8 2418 28 2458
9 2420 29 2460
10 2422 30 2462
11 2424 31 2464
12 2426 32 2466
13 2428 33 2468
14 2430 34 2470
15 2432 35 2472
16 2434 36 2474
17 2436 37 2476
18 2438 38 2478
19 2440 39 2480
・ Transmission power（at each antenna connector）: unit [ dBm ] TYP.
ch Freq. ch Freq.
0 2402 3.0 20 2442 3.0
1 2404 3.0 21 2444 3.0
2 2406 3.0 22 2446 3.0
3 2408 3.0 23 2448 3.0
4 2410 3.0 24 2450 3.0
5 2412 3.0 25 2453 3.0
6 2414 3.0 26 2454 3.0
7 2416 3.0 27 2456 3.0
8 2418 3.0 28 2458 3.0
9 2420 3.0 29 2460 3.0
10 2422 3.0 30 2462 3.0
11 2424 3.0 31 2464 3.0
12 2426 3.0 32 2466 3.0
13 2428 3.0 33 2468 3.0
14 2430 3.0 34 2470 3.0
15 2432 3.0 35 2472 3.0
16 2434 3.0 36 2474 3.0
17 2436 3.0 37 2476 3.0
18 2438 3.0 38 2478 3.0
19 2440 3.0 39 2480 3.0

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・ Receive Sensitivity: unit [ dBm ] TYP.
Band Data
rate Max Min Unit
BER
2400MHz
-
2480MHz
1 Mbps -20 -85 dBm 30.8 %
2.9 Note in terms of designing
1. Please don’t place any solid GND and line on below blue line's area. (with the exception of SMT land for this
module.)
2. Because red line's area is the antenna, it should be put on your PCB material.
3. Please don’t place any GND and line to the upper/lower side of the antenna.
4. If you can, please don’t place any metal parts around 15mm from antenna.(indicated by green line's area)
5. Because 2.4GHz is affected of the water, please have distance between the antenna(red line's area) and the
human body as possible as
6. On your system, please don’t use metal for cover of this evaluation board.

Page 6 of 8
WML-C103_User_Manual
26.Jun, 2018
COMMERCIAL IN CONFIDENCE
This material may not in whole or part be copied, stored electronically or communicated to third parties
without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
2.10 Recommended Reflow Condition
1) Pre heat ：170 →190 degree 60 ~ 120sec
2) Peek Temperature ：MAX 250 degree
：220 degree 30 ~ 60 sec
3) Reflow number of times ：MAX 1 time
Recommended Reflow Profile

Page 7 of 8
WML-C103_User_Manual
26.Jun, 2018
COMMERCIAL IN CONFIDENCE
This material may not in whole or part be copied, stored electronically or communicated to third parties
without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
. FCC Regulatory Information
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
FCC CAUT ON
Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
This transmitter must not be co-located or operated in conjunction with any other antenna or
transmitter.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment
and meets the FCC radio frequency (RF) Exposure Guidelines. This equipment has very low levels of RF
energy that is deemed to comply without testing of specific absorption rate(SAR).
Labelling.
M TSUM module WML-C103 labelled as below.
FCC Regulatory information. OEM devise should contain labelling that:
Approved in accordance to FCC rules transmitter module marked by FCC- D:EW4-W103 label,
manufactured by M TSUM incorporated to OEM product. When its not possible, in user manual
should be included such information.
This equipment should be installed and operated with minimum distance 20 cm between the radiator &
your body.

Page 8 of 8
WML-C103_User_Manual
26.Jun, 2018
COMMERCIAL IN CONFIDENCE
This material may not in whole or part be copied, stored electronically or communicated to third parties
without MITSUMI ELECTRIC CO., LTD’s prior agreement in writing.
4.Canada, Industrie Canada (IC)
The following information must be indicated on the host device of this module;
Model Name : WML-C10
Contains IC: 4250A-WC10
The following statements must be described on the user manual of the host device of this module;
This device complies with ndustry Canada’s applicable licence-exempt RSSs. Operation is subject to
the following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d’ ndustrie Canada applicables aux appareils radio exempts
de licence. L’exploitation est autorisée aux deux conditions suivantes :
1) l’appareil ne doit pas produire de brouillage;
2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement.
This equipment complies with FCC/ C radiation exposure limits set forth for an uncontrolled
environment and meets the FCC radio frequency (RF) Exposure Guidelines and RSS-102 of the C radio
frequency (RF) Exposure rules. This equipment has very low levels of RF energy that is deemed to
comply without testing of specific absorption rate (SAR).
Cet équipement est conforme aux limites d’exposition aux rayonnements énoncées pour un
environnement non contrôlé et respecte les règles les radioélectriques (RF) de la FCC lignes directrices
d'exposition et d’exposition aux fréquences radioélectriques (RF) CNR-102 de l’ C. Cet équipement
émet une énergie RF très faible qui est considérée comme conforme sans évaluation du débit
d’absorption spécifique (DAS).
This equipment should be installed and operated with minimum distance 20 cm between the radiator &
your body.
Cet appareil doit être installé et utilisé avec une distance minimale de 20 cm entre le radiateur et le
corps humain.