EWT EWTJ680E User manual

East Wind Technologies, Inc.
EWTJ680E Module
General Technical Manual
(Revision 1.01)
East Wind Technologies, Inc.
January 30, 2024

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￭ Revise history
No. Date Description Rev. Page
1 2023/11/08 Original version 1.00
2 2023/11/21 Add supported card types 1.01 7


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1 Introduction
1.1 Features
￭ NFC Function
￭ Support ISO 14443A/B, ISO 15693, FeliCa Lite-S (RCS966) and more ISO STD
￭ Support ISO-DEP(ISO 14443-4)
￭ Frequency: 13.56 MHz (±20PPM)
￭ Input voltage: 4V – 6V
￭ Average current: 150mA(±10mA)
￭ Detect distance: 5.5cm(±0.5cm, ISO 14443A card (MF1 IC S50))
￭ Communication interface: RS-232
￭ Baud Rate: 19,200bps
￭ Main board size: 70mm x 40mm x 5.8mm
￭ Storage temperature: -40℃~125℃
￭ Operating temperature: -40℃~105℃
￭ Operating humidity : 90%
￭ With LED light
￭ With metal cover

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Warning:
Federal Communication Commission Interference Statement
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.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.
Radiation Exposure Statement:
The product comply with the FCC portable RF exposure limit set forth for an uncontrolled
environment and are safe for intended operation as described in this manual. The further RF exposure
reduction can be achieved if the product can be kept as far as possible from the user body or set the
device to lower output power if such function is available.

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KDB 996369 D03 OEM Manual rule sections:
2.2 List of applicable FCC rules
This module has been tested for compliance to FCC Part 15.225, 15.215
2.3 Summarize the specific operational use conditions
Any other usage conditions such as co-location with other transmitter(s) will need a separate
reassessment through a class II permissive change application or new certification.
2.4 Limited module procedures
Not applicable.
2.5 Trace antenna designs
Not applicable.
2.6 RF exposure considerations
The product comply with the FCC portable RF exposure limit set forth for an uncontrolled
environment and are safe for intended operation as described in this manual. The further RF
exposure reduction can be achieved if the product can be kept as far as possible from the user
body or set the device to lower output power if such function is available.
2.7 Antennas
The following antennas have been certified for use with this module; antennas of the same type
with equal or lower gain may also be used with this module.
Antenna Type Integrated
Antenna connector N/A
2.8 Label and compliance information
The final end product must be labeled in a visible area with the following: “Contains FCC ID:
2AGMLEWTJ680E”. The grantee's FCC ID can be used only when all FCC compliance
requirements are met.
The OEM integrator has to be aware not to provide information to the end user regarding how to
install or remove this RF module in the user’s manual of the end product which integrates this
module.
The end product user manual shall include all required regulatory information/warning as shown
in this manual.
2.9 Information on test modes and additional testing requirements
Any co-located or simultaneous transmission with other transmitter(s) will require a separate class
II permissive change re-evaluation or new certification.
2.10 Additional testing, Part 15 Subpart B disclaimer
This transmitter module is tested as a subsystem and its certification does not cover the FCC
Part 15 Subpart B (unintentional radiator) rule requirement applicable to the final host. The

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final host will still need to be reassessed for compliance to this portion of rule requirements
if applicable.
OEM/Host manufacturers are ultimately responsible for the compliance of the Host and Module.
The final product must be reassessed against all the essential requirements of the FCC rule such
as FCC Part 15 Subpart B before it can be placed on the US market. This includes reassessing
the transmitter module for compliance with the Radio and EMF essential requirements of the
FCC rules. This module must not be incorporated into any other device or system without
retesting for compliance as multi-radio and combined equipment.
As long as all conditions above are met, further transmitter test will not be required. However,
the OEM integrator is still responsible for testing their end-product for any additional
compliance requirements required with this module installed.
2.11 Note EMI Considerations
Please follow the guidance provided for host manufacturers in KDB publications 996369 D02
and D04.
2.12 How to make changes
Only Grantees are permitted to make permissive changes. Please contact us should the host
integrator expect the module to be used differently than as granted:
Ben Chen / Vice President
TEL: [phone]#17
FAX: [phone]
Email: [email protected]
IMPORTANT NOTE: In the event that these conditions cannot be met (for example certain laptop
configurations or co-location with another transmitter), then the FCC authorization is no longer
considered valid and the FCC ID cannot be used on the final product. In these circumstances, the
OEM integrator will be responsible for re-evaluating the end product (including the transmitter)
and obtaining a separate FCC authorization.

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Industry Canada statement:
This device complies with ISED’s licence-exempt RSSs. 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.
Le présent appareil est conforme aux CNR d’ ISED applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes : (1) le dispositif ne doit pas produire de
brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage reçu, y compris un brouillage
susceptible de provoquer un fonctionnement indésirable.
Radiation Exposure Statement:
The product comply with the Canada portable RF exposure limit set forth for an uncontrolled environment
and are safe for intended operation as described in this manual. The further RF exposure reduction can be
achieved if the product can be kept as far as possible from the user body or set the device to lower output
power if such function is available.
Déclaration d'exposition aux radiations:
Le produit est conforme aux limites d'exposition pour les appareils portables RF pour les Etats-Unis et le
Canada établies pour un environnement non contrôlé.
Le produit est sûr pour un fonctionnement tel que décrit dans ce manuel. La réduction aux expositions RF
peut être augmentée si l'appareil peut être conservé aussi loin que possible du corps de l'utilisateur ou que le
dispositif est réglé sur la puissance de sortie la plus faible si une telle fonction est disponible.
This device is intended only for OEM integrators under the following conditions: (For
module device use)
1) The transmitter module may not be co-located with any other transmitter or antenna.
As long as 1 condition above is met, further transmitter test will not be required. However, the OEM integrator
is still responsible for testing their end-product for any additional compliance requirements required with this
module installed.
Cet appareil est conçu uniquement pour les intégrateurs OEM dans les conditions
suivantes: (Pour utilisation de dispositif module)
1) Le module émetteur peut ne pas être coïmplanté avec un autre émetteur ou antenne.
Tant que les 1 condition ci-dessus sont remplies, des essais supplémentaires sur l'émetteur ne seront pas
nécessaires. Toutefois, l'intégrateur OEM est toujours responsable des essais sur son produit final pour toutes
exigences de conformité supplémentaires requis pour ce module installé.
IMPORTANT NOTE:
In the event that these conditions can not be met (for example certain laptop configurations or co-location
with another transmitter), then the Canada authorization is no longer considered valid and the IC ID can not
be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating
the end product (including the transmitter) and obtaining a separate Canada authorization.

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NOTE IMPORTANTE:
Dans le cas où ces conditions ne peuvent être satisfaites (par exemple pour certaines configurations
d'ordinateur portable ou de certaines co-localisation avec un autre émetteur), l'autorisation du Canada
n'est plus considéré comme valide et l'ID IC ne peut pas être utilisé sur le produit final. Dans ces
circonstances, l'intégrateur OEM sera chargé de réévaluer le produit final (y compris l'émetteur) et
l'obtention d'une autorisation distincte au Canada.
End Product Labeling
The product can be kept as far as possible from the user body or set the device to lower output power if such
function is available. The final end product must be labeled in a visible area with the following: “Contains
IC:24646-EWTJ680E”.
Plaque signalétique du produit final
L'appareil peut être conservé aussi loin que possible du corps de l'utilisateur ou que le dispositif est réglé sur
la puissance de sortie la plus faible si une telle fonction est disponible. Le produit final doit être étiqueté dans
un endroit visible avec l'inscription suivante: "Contient des IC: 24646-EWTJ680E".
Manual Information To the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to install or
remove this RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.
Manuel d'information à l'utilisateur final
L'intégrateur OEM doit être conscient de ne pas fournir des informations à l'utilisateur final quant à la façon
d'installer ou de supprimer ce module RF dans le manuel de l'utilisateur du produit final qui intègre ce module.
Le manuel de l'utilisateur final doit inclure toutes les informations réglementaires requises et avertissements
comme indiqué dans ce manuel.
取得審驗證明之低功率射頻器材，非經核准，公司、商號或使用者均不得擅自變更頻率、加大功率
或變更原設計之特性及功能。
低功率射頻器材之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並
改善至無干擾時方得繼續使用。前述合法通信，指依電信管理法規定作業之無線電通信。低功率射
頻器材須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
系統廠商應於平台上標示「本產品內含射頻模組： XXXyyyLPDzzzz-x」字樣。

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1.2 Dimension
Main board:

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Connector 排針型號:A257WV0-6PS

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1.3 Pin Configurations
PIN Function Type Description
1 VCC Power VCC
2 GND Power GND
3 ICC Output Indication of whether there is a card in the
antenna area: 0: Card present; 1: No card
4 TXD Input/ Output RS232C TXD / UART TXD
5 RXD Input RS232C RXD / UART RXD
6 RST Input hardware reset
(
active low, time:150us(Typ) )
視圖(View)

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1.4 Physical photos
Module front:
Module back:

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1.5 Supported card types
Card name EWTJ680E
MIFARE 1K ●
MIFARE 4K ●
MIFARE Ultra Light ●
MIFARE Ultra Light C ●
MIFARE Mini ●
MIFARE DESfire ●
MIFARE Plus ●
T=CL TYPE A ●
SR176 ●
SRI512 ●
SRI1K ●
SRI2K ●
SRI4K ●
SRIX4K ●
T=CL TYPE B ●
Sony Felica RCS962 ●
Sony Felica RCS965 ●
Sony Felica RCS966 ●
Suica ●
ICOCA ●
I.CODE SLI ●
I.CODE SLI-S ●
On Chip Data FLASH 512 bytes

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1.6 Basic Mode
EWTJ680E is a slave device; the "ask&answer" is the basic working mode. That means EWTJ680E
received a command from master machine, and then to execute the command and answer to master
machine. This is a command cycle. A new command will not be accepted while the module is executing
a command. So when you develop the application program, you MUST be sure the last command cycle
is finished, then to send the next command.
1.7 Automatically Detecting Card
EWTJ680E supports automatic detecting cards that are based on ISO14443A and ISO15693. When
the automatic detecting cardsfunction is open, then EWTJ680E continuously send searching card
commands. Once the card is entering into the effective electrical field, the ICC pin will show low level.
In this situation, you could directly to do operation to the card. If the automatic detecting function is
close, when you want to do operation to the card, you need send searching card command firstly.
The default automatic detecting cardsfunction could be set via 0x1D command. This setting is saved in
FLASH. The setting will be effect on next power on. While module is working, the automaticdetecting
cardsfunction could be temporarily open or closed via 0x11 command. This setting will not be saved.
So after power on again, it will be back to the default setting.
If the moduleoperate card mode (via 0x70 command)is set to ISO15693, then EWTJ680E just only auto
detect ISO15693 cards. If the moduleoperate card mode (via 0x70 command) is set to ISO14443A, then
EWTJ680E just only detectISO14443A cards.
Automatic detecting cards functionsupport ISO15693 cards.
Automatic detecting cards function support MIFARE 1K/4K and MIFAREUltra Light cards.
ISO14443A T=CL card could be detected when the automatic detecting cards function is open. If you
want to operate the card, you need send RATS command(0x30) to the module firstly. After the module
got successful response from the CPU card, then the automatic detecting cards function will be closed
automatically.
User could set automatic detecting card and output the card UID. Under this mode, the card serial Data
Packet Format
1.8 Communication Protocol
1.8.1 Data sent format
Length Command Data Checksum
 Length: 1 byte, number of bytes from Length byte to the last byte of Data.
 Command: 1 byte, Application-layer command, pleaserefers toApplication-layer
protocolin detailed.
 Data: length depends on the command type, from 0x00 to 0xFC bytes.
 Checksum: 1 byte, Exclusive OR (XOR) results from length byte to the last byte of

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data.
1.8.2 Data returned format
 Success:
Length Command Data Checksum
 Failure:
Length Invert Command Checksum
NOTE: "Failure" means that the communication between module and card failed.
1.9 Data Returned Time
Slaves begin to execute the command once received host's commands. The executive time is
normally lessthan 100ms, depand on the command type.Some command executive time maybe need
longer. The waiting time is decided by the card and the command type. So the hosts need to set the
waiting time according to the different commands.

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2 Communication Interface
2.1 RS232C interface
2.1.1 Physical Interface
RS232C is the UART interface which belongs to RS232C-level.The communication between
RS232C and PC is via TXD, RXD and GND pins. The host TXD pin connects to the device RXD pin,
meanwhile the host RXD pin connects to the device TXD pin.
The communication protocol is byte oriented. Both sending and receiving bytes are in
hexadecimal format. The communication parameters are as follows:
Baud rate: 19200bps (default), 115200bps, 9600bps, 38400bps and 57600bps.
Start bits: 1bit
Data bits: 8 bits
Stop bits: 1 bit
Parity check: None
Flow control: None
2.1.2 CommunicationProcess
Host send command to the slave, and the slave to execute once received the host's command, then
to send the result to the host.This is a command cycle.

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3 Application-layer Protocol
3.1 Overview
This chapter will introduce the communication protocol application level commands and data
structures in detail, the application level protocol only introduce the commands and the data.
We illustrate each command in the following format:
Frame Command Data Checksum
Frame Header:1 byte length information, all the bytes except Checksum byte.
Checksum: Exclusive OR (XOR) results from length byte to the last byte of data.
For example, we explain separately with the following command.
Frame 0x11 Mode Checksum
It’s the command to control the module working status, now we need to close the antenna with this
command, so,”mode” is 0x00, so, the command is:
0x03 11 00 12; in it 0x03 is Frame Header, all the bytes except Checksum byte, the length is 0x03,so
take the value 0x03; 0x11 is the command; 0x00 is parameter(meaning close automaticaldetecting card,
close the antenna); 0x12 is Checksum byte, the front 3 bytes XOR result is 0x12.

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3.2 System commands
3.2.1 Module reset to factory default
Function: Reset all configuration of the module to factory default setting.The new setting will
effect after re-power on.
Host send:
Frame 0x0F 52 45 53 45 54 Checksum
Success:
Frame 0x0F Checksum
Failure:
Frame 0xF0 Checksum
send: 0x07 0F 52 45 53 45 54 5D
return: 0x02 0F 0D
3.2.2 Set LED
Function: set the LED ON or OFF.
Host sends:
Frame 0x13 Status Checksum
Status：1byte
LED1 BIT0=0: OFF; BIT0=1: ON
LED2 BIT1=0: OFF; BIT1=1: ON
LED3 BIT2=0: OFF; BIT2=1: ON
LED4 BIT3=0: OFF; BIT3=1: ON
Success:
Frame 0x13 Checksum
Failure:
Frame 0xEC Checksum
3.2.3 Set ISO15693 Automatic Detecting Card AFI and AFI Enable
Function: set automatic detecting card AFI and AFI enables in ISO15693 mode. If users set
AFI and AFI enables, then automatic detecting card only detects the AFI of the card equal to the
set AFI. Settings will save in the module; it will not be lost after power OFF. AFI is default 0, AFI
function is Disable.
Host sends:
Frame 0x1B AFI AFI enable Checksum
AFI: 1 byte, AFI, 0~0xFF.
AFI enable: 1 byte, 0: Disable; 1: Enable; other value: RFU.

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Success:
Frame 0x1B Checksum
Failure:
Frame 0xE4 Checksum
3.2.4 Set Automatic Detecting Card Interval Time
Function: set interval time of automatic detecting card function. The default is 100ms.Settings
will save in the module; it will be not lost after power OFF.
Host sends:
Frame 0x1C Time Checksum
Time: 1 byte, 0x00 to 0xFF, unit is 10mS, 0x01 means 10mS.
Success:
Frame 0x1C Checksum
Failure:
Frame 0xE3 Checksum
3.2.5 Set the Default of Automatic Detecting Card
Function: Set the default state of automatic detecting card when power on device. Settings
will save in the module; it will be not lost after power OFF. For temporarily open or close
automatically detect card, please use the 0x11 command.
Host sends:
Frame 0x1D Status Checksum
Status: 1 byte, 0x00:OFF; 0x01: ON, other value: RFU
Success:
Frame 0x1D Checksum
Failure:
Frame 0xE2 Checksum
3.2.6 Set the RF Output Level
Function: To set the RF output level. When the RF output power is reduced, the card operation
distance will be reduced too.The customer could set it according to the concrete needs. Settings
will save in the module; it will be not lost after power OFF.
The default value is set to 0x00 (the strongest).
Host sends:
Frame 0x02 Power Checksum
Power: 1 byte, 0x00: the strongest; 0x01: the stronger; 0x02: the weak; 0x03: the weakest;
other values: RFU.

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Success:
Frame 0x02 Checksum
Failure:
Frame 0xFD Checksum