niu C22J Bluetooth Module User Guide
- June 3, 2024
- NIU
Table of Contents
niu C22J Bluetooth Module
WARNING
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 undesiredoperation.
Product features
The C22J module is designed to offer high integration, ultra-low power application capabilities.The system’s block diagram is as follow.
It embedsFlash, LDO and DCDC, crystal, RF match network and etc. With the high
integration
level of the module, few external components are needed to satisfy customers’
ultra-low cost requirements.
Its typical applications include, but are not limited to the following:
- Smartphone and tablet accessories
- RF Remote Control
- Sports and fitness tracking
- Wireless toys
- Smart Lighting, Smart Home devices
Key features
General features
- Up to 7 GPIOS
- 2xUARTs, Download and Communi ation, clock rate can be from 3.2 kHz to 6.5 MHz
- 24 bits audio quality
- Operating temperature range:-20C+85C
- Supports Bluetooth 5.0 classic and low energy
Flash features
c22J module embeds Flash with features below:
- Total 2Mbit.
- RAM 768KB.
RF features
Pin layout
Pin functions
No | PinName | Type | Description |
---|---|---|---|
1 | GPIO1 | Digital I/O | General input/outpu |
2 | GND | GND | GND |
3 | ANT | Analog | RFsingal |
4 | GND | GND | GND |
5 | GPIO32 | Digital I/O | General input/outpu |
6 | VBAT | PWR | Power, 3.6V max power |
7 | VBAT | PWR | Power, 3.6V max power |
8 | GPIO31 | Digital I/O | General input/outpu |
9 | BT_UART1_TX | Digital O | DL_UART1 TX |
10 | BT_UART1_RX | Digital I | DL_UART1 RX |
11 | BT_UART2_RX | Digital I | UART2 RX |
12 | BT_UART2_TX | Digital O | UART2 TX |
13 | GPIO33 | Digital I/O | General input/outpu |
14 | AUDLP | Analog O | Audio left channel positive output |
15 | AUDLN | Analog O | Audio right channel positive output |
16 | GPIO12 | Digital I/O | General input/outpu |
Size
- 13. 4 (mm) 11. 4 (mm) 2. 8 (mm)
Absolute maximum ratings
Absolute Maximum Ratings
Auxiliary equipment
- PCBA Antenna: PCBA_BT_ATA_1. 0(type)
Antenna performances
Please ensure the peak gain of the Bluetooth antenna meets the following requirements if the module is used in your designs.
Type | Peak Gain | |
---|---|---|
1. | PCB Antenna | -3.04dBi |
2. | Wire Antenna | -3.04dBi |
FCC Statement
FCC standards : FCC CFR Title 47 Part 15 Subpart C Section 15.247 PCB Antenna with antenna gain -3.04dBi We will retain control over the final installation of the module such that compliance of the end product is assured. In such cases, an operating condition on the limit module approval for the module must be only approved for use when installed in devices produced by a specific manufacturer. If any hardware modify or RF control software modify will be made by host manufacturer, C2PC or new certificate should be apply to get approval, if those change and modification made by host manufacturer not expressly approved by the party responsible for compliance, then it is illegal.
FCC Radiation Exposure Statement
The module can be installed or integrated in mobile or fix devices only. This
module cannot be installed in any portable device. This modular complies with
FCC RF radiation exposure limits set forth for an uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
If the FCC identification number is not visible when the module is installed
inside another device, then the outside of the device into which the module is
installed must also display a label referring to the enclosed module. This
exterior label can use wording such as the following: “Contains Transmitter
Module FCC ID: 2AZ6G-C22J Or Contains FCC ID: 2AZ6G-C22J”
OEM INTEGRATION INSTRUCTIONS:
This device is intended only for OEM integrator under the following conditions:
The module must be installed in the host equipment, and the transmitter module
may not be co-located with any other transmitter or antenna. The module shall
be only used with the internal on-board antenna that has been originally
tested and certified with this module. External antennas are not supported. As
long as these 3 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 (for example, digital device emissions, PC peripheral
requirements, etc.). The end-product may need Verification testing,
Declaration of Conformity testing, a Permissive Class ll Change or new
Certification. Please involve a FCC certification specialist in order to
determine what will be exactly applicable for the end-product.
Validity of using the module certification:
In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module 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. In such cases, please involve a FCC certification specialist in order to determine if a Permissive Class II Change or new Certification isrequired.
Upgrade Firmware:
The software provided for firmware upgrade will not be capable to affect any RF parameters certified for the FCC for this module, in order to prevent complianceissues.
End product labeling:
The final end product must be labeled in a visible area with the following: “Contains2AZ6G-C22J”.
Information that must be placed in the end user manual:
The OEM integrator has to be aware not to provide information to the end user
regarding howto 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 asshow in this manual.
When the module is installed inside another device, the user manual of the
host must contain below warning statements
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits
for a Class Bdigital device, pursuant to part15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference ina
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 particular
installation. Ilf 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.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. The devices must be installed and used in strict accordance with the manufacturer’s instructions as described in the user documentation that comes with the product. Any company of the host device which install this modular with limit modular approval should perform the test of radiated & conducted emission and spurious emission, etc. according to FCC CFR Part 15C: 15.247 and 15.209815.209, 15B class B requirement, Only if the test result comply with FCC CFR Part 15C: 15.247 and 15.209815.209, 15Bclass B requirement then the host can be sold legally.