JIANGSU LEADING EW-BLED-22 BLE Module User Manual
- June 5, 2024
- JIANGSU LEADING
Table of Contents
JIANGSU LEADING EW-BLED-22 BLE Module
About this manual
《 EW-Bled -22 Module Specification 》provides an introduction to the basic functions of the EW-BLED-22 module, including the electrical specifications, RADIO frequency performance, pin size, and reference schematic design of the module.Readers can refer to this document for a detailed understanding of the overall functional parameters of the module.
Change of History
| Rev. | Date | Change of history | Editor |
|---|---|---|---|
| V1.0 | 2020.08.18 | Initial release | Jon |
Profile
Features
The EW-Bled -22 is a small, low-cost Bluetooth standardized module developed
by Jiangsu Tech-leading information technology Co.,Ltd.
The features of this module are as follows.
- Support UART, SPI, I2C, I2S, ADC, PWM and other interfaces
- Support FTMS protocol, can be customized according to customer communication protocol
- Support true random number generator
- Support master and slave multiple connections, up to 16 connections
- On-board high performance PCB antenna
- Stamp hole pin, easy and reliable to weld
- Ultra-small package：11.2x16mm
- Ultra wide supply voltage：3.3V
- Working temperature：-20℃ ~ +85℃
EW-BLED-22 module only needs to connect with four lines of VCC,GND,TX and RX
to complete the data transmission and communication , which can also be
followed customers’ need to customizespecific communication protocols and
customized functions under specific applicationenvironments.After the module
is configured, you can use the relevant software to test communication data
function.Users can conduct Bluetooth connection and communication test through
the commonly used mobile Bluetooth communication test tools
Tech-leading company has been engaged in the field of Bluetooth for many
years, and has strong research and development force. It can easily realize
the interconnection, data transmission and other various applications of
users’ Bluetooth devices.Our company can customize and design the Bluetooth
module according to customers’ requirements and provide corresponding software
and hardware support based on the EW-Bled -22 standard version module.
1.2 Application scope
Fitness equipment: Treadmill, Fitness bike, Elliptical machine, etc；
Electronic data
Absolute Maximum Ratings
| Rating | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage | VCC | 1.8 | 4.3 |
| I/O Voltage | ALDO_OUT | 2.1 | 3.5 |
| Storage Temperature | Tstr | -20 | 85 |
Note：
The electrical characteristics listed are target specifications for reference
only. Some of the data may be updated based on actual test results。
The voltage values shown are based on GND in the module.Any voltage exceeding
the “maximum rating” may be applied to the device and cause permanent damage.
| Item | Symbol | Min | Typ. | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VCC | 1.8 | 3.3 | 4.3 | V |
| I/O Voltage | ALDO_OUT | 2.1 | 2.9 | 3.5 | V |
| Operating Temperature |
Topr
|
-20
|
–
|
85
|
ºC
（Recommended Operating Conditions）
| Operation Mode | Average | Maximum | Unit |
|---|---|---|---|
| TX peek current(0 dB) | 9 | mA | |
| RX peek current | 12.8 | mA | |
| Deep sleep current(include 48K retention RAM) |
12
| |
μA
Power off| 5| | μA
（Power Consumption）
Audio CODEC
Digital to Analogue Converter(Mono)
PARAMETER| CONDITIONS| MIN| TYP| MAX| UNIT
Resolution| –| –| –| 20| Bits
Sampling frequency| The synchronized clock| 8| | 48| kHz
SNR
(Signal to Noise Ratio)
| Fin=1kHz B/W=20Hz—20KHz
A-Weighted THD_N<0.01% Fs(8K,16K,32K,44.1K,48K)
| |
92
| |
dB
Digital Gain| Digital Gain| -48| | 32| dB
Analogue Gain| Analog Gain Resolution =| 0| | -30| dB
Output voltage| VDDA=2.9V| | 1500| | mV
Stopband attenuation| | 65| | | dB
Analog to Digital Converter(Mono)
PARAMETER| CONDITIONS| MIN| TYP| MAX| UNIT
Resolution| –| –| –| 16| Bits
Sampling frequency| The synchronized clock| 8| | 48| kHz
Signal to Noise Ratio
| A-weighted| | 79| | dBFS
W/O weighting| | 79| | dBFS
Digital Gain| Digital Gain| -48| | 32| dB
Analogue Gain| Analog Gain Resolution =| 0| | 30| dB
Pins definition
Pins layout
Figure 3-1 Module pins diagram
Note：Figure 3-1 Pin functionality can be redefined by pin reuse
Pins definition
PIN #
|
Pin name
|
Type
|
Description
---|---|---|---
1| GND| GND| Module GND
2| VCC|
POWER
| 1.8V-4.3V power supply，typical value 3.3V
3| PA4| I/O| SCL0/I2SCLK/PWM4/SSPCLK/URXD0/URXD1/CLKOUT/PD
4| LDO_OUT| Analog Output| Analog linear regulator output
5
|
PD7
|
I/O
| SDA1/I2SDIN/PWM1/SSPDIN/UTXD0/UTXD1/ ANTCTL1/PDMDAT/PWM0/ADC3
6| AOUTP| Analog Output| Speaker output positive
7| AOUTN| Analog Output| Speaker output negative
8
|
PD6
|
I/O
| SCL1/I2SDOUT/PWM0/SSPDOUT/URXD0/URXD1/CLKOUT
/PDMCLK/PWM1/ADC2PDMCLK/PWM1/ADC2
9
|
PD5
|
I/O
| SDA0/I2SFRM/PWM5/SSPCSN/UTXD0/UTXD1/ANTCTL0
/PDMDAT/PWM4/ADC1
10
|
PC5
|
I/O
| SDA0/I2SFRM/PWM5/SSPCSN/UTXD0/UTXD1/ SWV/PDM
11| RST| Analog Input| Reset
12
|
PA3
|
I/O
| SDA1/I2SDIN/PWM3/SSPDIN/UTXD0/UTXD1/ANTCTL1
/PDMDAT/PWM2
13
|
PA2
|
I/O
| SCL1/I2SDOUT/PWM2/SSPDOUT/URXD0/URXD1
/ANTCTL0
14
|
PA1
|
I/O
| SDA0/I2SFRM/PWM1/SSPCSN/UTXD0/UTXD1/ANTCTL0
/PDMDAT/PWM0
15
|
PA0
|
I/O
| SCL0/I2SCLK/PWM0/SSPCLK/URXD0/URXD1/CLKOUT/PD
MCLK/PWM1
16
|
PA7
|
I/O
| SDA1/I2SDIN/PWM1/SSPDIN/UTXD0/UTXD1/ANTCTL0
/PDMDAT/PWM0
17
|
PA6
|
I/O
| SCL1/I2SDOUT/PWM0/SSPDOUT/URXD0/URXD1/ CLKOUT/PDMCLK/PWM1
18
|
PA5
|
I/O
| SDA0/I2SFRM/PWM5/SSPCSN/UTXD0/UTXD1/
ANTCTL1/PDMDAT/PWM4
19
|
PD4
|
I/O
| SCL0/I2SCLK/PWM4/SSPCLK/URXD0/URXD1/ANTCTL0
/PDMCLK/PWM5/ADC0
20
|
PD7
|
I/O
| SDA1/I2SDIN/PWM1/SSPDIN/UTXD0/UTXD1/ANTCTL1
/PDMDAT/PWM0/ADC3
21
|
PC6
|
I/O
| SCL1/I2SDOUT/PWM4/SSPDOUT/URXD0/URXD1/SWTCK
/PDMCLK/PWM5
Schematic
Reference schematic
Note：PA6,PA7 for communication business serial port, PA2,PA3 for firmware programming and debugging serial port
Module size
Note：Tech-leading company reserves the right to select components from different suppliers to realize the function of modules.All mechanical, electrical specifications and modulecertifications are maintained.All dimensions are in mm (mm).
| Module overall size | Length (X) | 11.20 ± 0.15 mm |
|---|---|---|
| Width (Y) | 16.00± 0.15 mm | |
| Antenna location size | Length (X) | 11.20 mm |
| Width (Y) | 4.34 mm | |
| PCB thickness | Height (H) | 0.80 ± 0.05 mm |
| Module thickness（PCB thickness+Maximum component height） | Height (H) | 2.50 mm |
typical
Attention
Bluetooth works at the frequency of 2.4ghz, so influences of various factors
on wireless transceivers should be avoided as far as possible. The following
points should be noted：
- Avoid using metal as part of the product housing surrounding the module. If the housing is metal, consider using an external antenna。
- The metal screws inside the product should be kept away from the RF part of the module。
- To maximize RF performance, the user host board layout should follow the following recommendations：
- Antenna clearance area: the user’s host board located directly below the module antenna area shall not have any copper foil wiring （Including power supply, GND and signal layer)。
- Module location: Ideally, the module should be placed in a corner of the user’s host board, with the PCB antenna located far away from the host board edge, this position minimizes
the antenna clearance area.
（Refer to the following figure for the definition of antenna clearance area）
reference PCB package
Reflow parameter
Reflow parameter can reference below data： 
| Temperature range | Time | Key parameters |
|---|---|---|
| Preheat zone(<150℃) | 60-120S | Ramp up rate:≤2S |
| Uniform temperature zone(150-200℃) | 60-120S | Ramp up rate:<1S |
| Re-circulation zone(>217℃) | 40-60S | Peak:240-260℃ |
| Cooling zone | Ramp down rate:1℃/s≤Slope≤4℃/s |
FCC warning：
Any Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
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.
OEM Guidance
-
Applicable FCC rules
This module is granted by Single Modular Approval. It complies to the requirements of FCC part 15C, section 15.247 rules. -
The specific operational use conditions
This module can be used in IoT devices. The input voltage to the module is nominally 3.3V DC. The operational ambient temperature of the module is -20 to 85 degree C. Only the embedded PCB antenna is allowed. Any other external antenna is prohibited. -
Limited module procedure s
N/A -
Trace antenna design
N/A -
RF exposure considerations
The equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment can operated with minimum distance 5mm between the radiator and your body. -
Antenna
Antenna type: PCB antenna; Antenna Gain: 0 dBi -
Label and compliance information
An exterior label on OEM’s end product can use wording such as the following: “Contains Transmitter Module FCC ID: 2AXDJ-EWBLED22” or “Contains FCC ID: 2AXDJ-EWBLED22” 8. -
Information on test modes and additional testing requirements
-
The modular transmitter has been fully tested by the module grantee on the required number of channels,modulation types, and modes, it should not be necessary for the host installer to re-test all the available transmitter modes or settings. It is recommended that the host product manufacturer, installing the modular transmitter,perform some investigative measurements to confirm that the resulting composite system does not exceed the spurious emissions limits or band edge limits (e.g., where a different antenna may be causing additional emissions).
-
The testing should check for emissions that may occur due to the intermixing of emissions with the other transmitters, digital circuitry, or due to physical properties of the host product (enclosure). This investigation is especially important when integrating multiple modular transmitters where the certification is based on testing each of them in a stand-alone configuration. It is important to note that host product manufacturers should not assume that because the modular transmitter is certified that they do not have any responsibility for final product compliance.
-
If the investigation indicates a compliance concern the host product manufacturer is obligated to mitigate the issue. Host products using a modular transmitter are subject to all the applicable individual technical rules as well as to the general conditions of operation in Sections 15.5, 15.15, and 15.29 to not cause interference. The operator of the host product will be obligated to stop operating the device until the interference have been corrected .
-
Additional testing, Part 15 Sub part B disclaimer The final host / module combination need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device.
The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance in KDB 996369. For host products with certified modular transmitter, the frequency range of investigation of the composite system is specified by rule in Sections 15.33(a)(1) through
(a)(3), or the range applicable to the digital device, as shown in Section 15.33(b)(1), whichever is the higher frequency range of investigation When testing the host product, all the transmitters must be operating.The transmitters can be enabled by using publicly-available drivers and turned on, so the transmitters are active. In certain conditions it might be appropriate to use a technology-specific call box (test set) where accessory 50 devices or drivers are not available. When testing for emissions from the unintentional radiator, the transmitter shall be placed in the receive mode or idle mode, if possible. If receive mode only is not possible then, the radio shall be passive (preferred) and/or active scanning. In these cases, this would need to enable activity on the communication BUS (i.e., PCIe, SDIO, USB) to ensure the unintentional radiator circuitry is enabled. Testing laboratories may need to add attenuation or filters depending on the signal strength of any active beacons (if applicable) from the enabled radio(s). See ANSI C63.4, ANSI C63.10 and ANSI C63.26 for further general testing details.
The product under test is set into a link/association with a partnering device, as per the normal intended use of the product. To ease testing, the product under test is set to transmit at a high duty cycle, such as by sending a file or streaming some media content.
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