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Regulatory Notices:

3.1

United States

3.1.1

Notice applicable to EVMs not FCC-Approved:

FCC NOTICE:

This kit is designed to allow product developers to evaluate electronic components, circuitry, or software

associated with the kit to determine whether to incorporate such items in a finished product and software developers to write
software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or
otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition
that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.
Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must
operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

3.1.2

For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:

CAUTION

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.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.

FCC Interference Statement for Class A EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.

FCC Interference Statement for Class B EVM devices

NOTE: 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 or more
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.

3.2

Canada

3.2.1

For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-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.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie 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, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.

Summary of Contents for ISO1644DWEVM

Page 1: ...olated I2C Transceivers With GPIO 3 4 EVM Setup and Operation 4 5 Bill of Materials 4 6 EVM Schematic and PCB 5 List of Figures Figure 3 1 ISO1642 ISO1643 and ISO1644 Pinouts 3 Figure 3 2 ISO1644DWEVM Top View 3 Figure 4 1 Basic ISO1644DWEVM Operation 4 Figure 6 1 ISO1644DWEVM Schematic 5 Figure 6 2 ISO1644DWEVM Top PCB Layout 6 Figure 6 3 ISO1644DWEVM Bottom PCB Layout 6 List of Tables Table 5 1 ...

Page 2: ...damaging sensitive circuitry ISO1642 ISO1643 and ISO1644 devices have two bidirectional data channels for I2C clock and data lines and are fit for multi master or clock stretching applications These devices achieve isolated bidirectional communication by introducing a static voltage offset SVO making the side 1 low level output greater than the side 1 low level input thus preventing an internal lo...

Page 3: ... SDA1 SDA2 Isolation 16 15 14 13 9 10 11 12 1 2 3 4 8 7 6 5 INA INB GND1 OUT C GND2 OUTB OUTA INC ISO1644DW Figure 3 1 ISO1642 ISO1643 and ISO1644 Pinouts The EVM PCB is shown in Figure 3 2 and comes with an ISO1644DW installed in place of U1 However this EVM can also be configured for evaluation of ISO1642DW and ISO1643DW by replacing the included ISO1644DW device in place of U1 Figure 3 2 ISO164...

Page 4: ...5 INA INB GND1 OUTC GND2 OUTB OUTA INC ISO1644DW Figure 4 1 Basic ISO1644DWEVM Operation Although the ISO1642 ISO1643 and ISO1644 devices feature bidirectional data channels the devices perform optimally when side 1 SDA1 and SCL1 is connected to a single controller or node of an I2C network while side 2 SDA2 and SCL2 is connected to the I2C bus Please note that bidirectional clocks can be used on ...

Page 5: ...s should not be tied directly to a supply voltage without a pullup resistor to limit input current These jumpers also provide input output signal access including for oscilloscope probes to each pin Note Ensure that SDAx and SCLx signal lines are not tied directly to VCCx A current limiting pullup resistor is required and populated by default to limit current in the cases where the device pins dri...

Page 6: ...yout Figure 6 3 ISO1644DWEVM Bottom PCB Layout EVM Schematic and PCB www ti com 6 ISO1644DWEVM Reinforced Isolated I2C With GPIOs Evaluation Module SLLU329 JUNE 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 7: ...other than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control techniques are used to the extent TI deems necessary TI does not test all parameters of each EVM User s claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects...

Page 8: ... 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...

Page 9: ...y for convenience and should be verified by User 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in R...

Page 10: ... any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all...

Page 11: ...OR DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has...

Page 12: ...s are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for and you wi...

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