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JS-BTM235E
JIASHI
Bluetooth
Module
Data
Sheet
Document
Type:
Bluetooth
Module
Datasheet
Document
Version:
V1.0
Release
Date:
November 10, 2025
Copyright 2012 by Fihoenst Communication Co., Ltd. All Rights Reserved.
Reproduction of this document, in part of in whole, by any means is prohibited without written permission from
JIASHI Communication Co., Ltd. The information contained herein is believed to be accurate as of the date of
publication. However, Fihonest is not liable for any damages, including indirect or consequential from the use of
software this document represents, or any reliance of the accuracy of this document. JIASHI reserves the right to
change the contents of this document at any time without notice.
This document contains proprietary confidential trade secrets and may be subject to additional restrictions contained
in the licensing agreement under which this document was obtained.
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Revision
History
Date
Version
Description
Author
2025-11-10
V1.0
First release
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CONTENT
1. INTRODUCTION… … … … … … …… …… … … … … … …… …… … … … …… … … … … … … … …… 4
1.1 Block Diagram ............................................................................................................................ 4
1.2 Features ........................................................................................................................................ 5
1.3 Applications .................................................................................................................................. 6
2. GENERAL SPECIFICATION ............................................................................................................. 7
3. PHYSICAL CHARACTERISTIC.....................................................................................................8
3.1 Pin Description.............................................................................................................. ..........10 -12
4. ELECTRICAL CHARACTERISTIC ..................................................................................................13
4.1 A
bsolute
m
aximum
ratings ....................................................................................................................... 13
4.2 Recommended power supply ............................................................................................................13
4.3 Regulators maximum output current................................................................................ …..............13
4.3.1 Regulators Power Down................................................................................................ …..............13
4.3.2 Reference Voltage......................................................................................................... …..............14
4.3.3 A/D Converters............................................................................................................... …..............14
4.4 Audio ADC Parameters…………………….............…………………………………………………… ….. 14
4.5 Stereo DAC Parameters……………….............………………………………………………………… 15-16
4.6 RF characteristics...............................................................................................................................16
6. REFLOW PROFILE………………………………………………………………………………………………17
7. PACKAGING INFORMATION .......................................................................................................... 18
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1. INTRODUCTION
JS-BTM235E is a highly integrated single-chip Bluetooth Audio solution. Positioning at Bluetooth
portable stereo speakers, headsets and speakerphones and local MMC/SD Card Audio
Playback market, JS-BTM235E satisfies the market requirements with high performance, low
cost and low power consumption.
JS-BTM235E adopts CPU + DSP dual core architecture. Large capacity RAM is embedded to
meet different Bluetooth applications, and support Bluetooth background working while playing
high quality music with traditional plug-in card and USB flash disk. JS-BTM235E supports
decoding Bluetooth A2DP audio and loading sound effects simultaneously, support Bluetooth
handfree calls with dual MIC AEC and noise reduction.
JS-BTM235E integrates Bluetooth controller support V6.0 and compliant with V5.4/5.3/5.2/5.0
/4.2/2.1 Bluetooth specification, and supports dual mode (BR/EDR + Low Energy Controllers).
The links in BR/EDR and LE can be active simultaneously.JS-BTM235E takes special methods
at power optimization, especially for various applications scenarios, including sniff, Bluetooth
idle, Bluetooth playing and call modes. Embedded PMU supports power optimization and
provide long battery life. The competitive advantages of JS-BTM235E are high music and call
qualities with low power and BOM, which lays the foundation for our goal at high-end market.
Above all, JS-BTM235E provides a true “ALL-IN-ONE” solution, making it the ideal choice for
highly integrated and optimized Bluetooth audio products.
1.1 Block Diagram
ATS2835P2
32-
bit Risc
Crystal
(24MHz)
PIOs
USB
Decode
Analogue/
SPDIF/I2S
Antenna
MIC
I2C
Key
LCD/LED
UART
Line in
FLASH
(32M bits)
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1.2 Features
Small overall dimension ( 31 * 15 * 2.5 mm )
Supports Dual-mode Bluetooth V6.0 with LE audio
Internal 32M bits 4xIO SPI serial Flash for custom defined software
Internal 32KB CPU ICache for SPI NorFlash
Up to 16MB extensional pSRAM to support rich and flexible software feature
Supports 24MHz OSC with on-chip PLL
Supports for echo cancellation, noise reduction and wind noise reduction
Max transmitting output power: 11dBm
Compatible with AVRCP Profile V1.6.2, A2DP Profile V1.4,HFP Profile V1.9
Support for SBC & AAC & LC3 Bluetooth audio transmission format
Support LE Audio: Unicast, Auracast,CIS,BIS
Compatible with TMAP,PBP Profile
Supports all packet types in basic rate and enhanced data rate
Supports SCO/eSCO link
Built-in stereo 24 bit input sigma-delta DAC
Supports Secure Simple Pairing
Supports Low Power Mode ( Sniff / Sniff Sub-rating / Hold / Park )
Bluetooth Dual Mode support: Simultaneous LE and BR / EDR
Supports multiple Low Energy states
Fast AGC control to improve receiving dynamic range
Supports AFH to dynamically detect channel quality to improve transmission quality
Integrated Class1 PA
Supports Li-Ion battery and 5V power supply
※ Some features are optional for customization on demand.
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1.3 Application
Portable stereo speakers and speakerphones
Bluetooth car audio unit
Stereo headsets and headphone
Other Bluetooth audio applications
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2. GENERAL SPECIFICATION
Bluetooth Specification
Chip
Set
ATS2835P2
Module ID
JS-BTM235E
BT
Standard
Bluetooth
®
V6.0
specification
RF TX Output
Power
-6
~
10dBm
(typical)
RX Sensitivity
-90dBm (typical)
Frequency
Band
2.402GHz~2.480GHz
ISM
Band
Modulation Type
GFSK,π/4 DQPSK,8DPSK
Channel No.
79(for Classic),40(for BLE)
Baseband Crystal OSC
24MHz
Hopping
1600hops/sec, 1MHz channel space
RF Input Impedance
50 ohms
Environmental
RoHS Compliant
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3. PHYSICAL CHARACTERISTIC
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3.1 Pin Description
Pin#
Pin Name
Pad Type
Description（Function Multiplex）
1
GND
GND
GND
2
RFIO
RF
Bluetooth antenna IO
3
GPIO42
DIO
TWI_SCL / PWM3 / PWM5 / I2STX0_BCLK / I2SRX0_BCLK /
I2SRX1_BCLK / SD0_CLK0/ IR_RX / UART1_TX / SD1_DAT1
4
GPIO35
DIO
SPDIF_TX / LCD_SEG25 / I2STX0_DOUT/ I2SRX0_DIN /
I2SRX1_DIN
5
GPIO34
DIO
LCD_SEG24 / I2STX0_LRCLK / I2SRX0_LRCLK
/ I2SRX1_LRCLK / BT_REQ
6
GPIO33
DIO
LCD_SEG23 / I2STX0_BCLK / I2SRX0_BCLK
/ I2SRX1_BCLK
7
GPIO32
DIO
LCD_SEG22 / I2STX0_MCLK / I2SRX0_MCLK /
I2SRX1_MCLK / VMIC
8
GPIO16
DIO
SPI2_SS / LCD_SEG14 / SPI1_SS / PWM4 / UART0_RX /
Timer2_cap / SD0_CMD
9
GPIO11
DIO
LED_SEG3 / LCD_D3 / LCD_SEG5 / SPI1_MOSI / PWM6 /
UART0_RTS/ LRADC8 / SPI2_MOSI / Timer3_cap /
SD1_DAT1 / BT_ACCESS
10
GPIO12
DIO
LED_SEG4 / LCD_D4 / LCD_SEG6 / SPI1_IO2/ PWM7 /
LRADC9 / Timer2_cap / SD1_DAT2
11
GPIO10
DIO
LED_SEG2 / LCD_D2 / LCD_SEG4 / SPI1_MISO / PWM5 /
UART0_CTS / LRADC7 / SPI2_MISO / Timer2_cap /
SD1_DAT0
12
GPIO8
DIO
LED_SEG0 / LCD_D0 / LCD_SEG2 / SPI1_SS / PWM3 /
LRADC5 / SPI2_SS / Timer2_cap / SD1_CLK
13
GPIO9
DIO
LED_SEG1 / LCD_D1 / LCD_SEG3 / SPI1_CLK / PWM4 /
LRADC6 / SPI2_CLK / Timer3_cap / SD1_CMD
14
GPIO13
DIO
LED_SEG5 / LCD_D5 / LCD_SEG7 / SPI1_IO3 / PWM8
/ UART1_RTS / LRADC10 / Timer3_cap / SD1_DAT3
15
GPIO14
DIO
LED_SEG6 / LCD_D6 / LCD_SEG8
16
GPIO15
DIO
LED_SEG7 / LCD_D7 / LCD_SEG9 / SPI1_IO3 / PWM4
/ UART1_RX / I2STX0_MCLK / I2SRX0_MCLK /
I2SRX1_MCLK / Timer3_cap / SD1_DAT0
17
GPIO22
DIO
LCD_D10 / LCD_SEG12 / IR_RX / PWM1 / UART0_TX /
LRADC2 / I2STX0_LRCLK / I2SRX0_LRCLK / I2SRX1_LRCLK
/ Timer2_cap / SD1_DAT2 / UART1_RX /
SD0_DAT2
18
GPIO23
DIO
LCD_D11 / LCD_SEG13 / SPDIF_TX / PWM2 / UART0_TX
/ LRADC3 / I2STX0_BCLK / I2SRX0_BCLK / I2SRX1_BCLK
/ Timer3_cap / SD1_CMD / SD0_DAT3 / SD0_DAT0
19
IPO06
DIO
LED_COM6 / BT_ACCESS / LCD_SEG0 / PWM4 /
I2STX0_LRCLK / I2SRX0_LRCLK / I2SRX1_LRCLK
/ Timer2_cap / SD1_DAT0
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20
GPIO21
DIO
SPI2_MOSI / LCD_D9 / LCD_SEG11 / SPI1_MOSI / PWM0 /
UART0_RX/ TEMPADC / I2STX0_MCLK / I2SRX0_MCLK /
I2SRX1_MCLK / Timer3_cap SD1_CLK / UART1_TX /
SD0_DAT1
21
IPO05
DIO
LED_COM5 / BT_REQ / LCD_COM5 / PWM3 / Timer3_cap
22
GPIO40
DIO
PTA_GRANT / LCD_SEG30 / PWM2 / I2STX0_MCLK /
I2SRX0_MCLK / I2SRX1_MCLK
23
GPIO39
DIO
BT_ACCESS / LCD_SEG29 / PWM1 / I2STX0_BCLK /
I2SRX0_BCLK / I2SRX1_BCLK
24
GPIO38
DIO
SPDIF_RX / BT_REQ / LCD_SEG28 / PWM0 / I2STX0_DOUT
/ I2SRX0_DIN / I2SRX1_DIN
25
GPIO20
DIO
SPI2_MISO / LCD_D8 / LCD_SEG10 / SPI1_MISO / PWM2 /
UART1_CTS / Timer2_cap / SD0_DAT0 / VMIC
26
GPIO17
DIO
SPI2_CLK / LCD_SEG15 / SPI1_CLK / UART0_TX/
Timer3_cap / SD0_CLK0
27
DP
AIO
USB Data plus
28
DM
AIO
USB Data minus
29
GND
GND
GND
30
AGND
GND
GND for PA
31
VRO_S
AO/DIO
Right channel differential output and direct drive circuit
reference voltage
32
AOUTR
AO/DIO
Right channel output and right channel differential output
33
AOUTL
AO/DIO
Left channel output and left channel differential output
34
VRO
AO/DIO
Left channel differential output and direct
drive circuit reference voltage
35
MICINL
AI/DIO
Microphone left channel input Differential
MICIN Positive Input
36
MICINR
AI/DIO
Microphone right channel input Differential
MICIN Positive Input
37
AUX2L
AI/DIO
Linein/FM left channel input2
38
AUX2R
AI/DIO
Linein/FM right channel input2
39
AUX0L
AI/DIO
Linein/FM left channel input0,
left channel differential input
40
AUX0R
AI/DIO
Linein/FM right channel input0,
left channel differential input
41
AUX1L
AI/DIO
Linein/FM left channel input1,
right channel differential input
42
AUX1R
AI/DIO
Linein/FM right channel input1,
right channel differential input
43
AGND
GND
Analog GND
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44
AVCC
PWR
Analog IO PWR
45
SVCC
PWR
PWR for standby
46
WIO0
DIO
Wake up I/O port
EXT_32K_IN / HOSC / LRADC1
47
GPIO4
DIO
LED_COM4 / LCD_CEB / LCD_COM4 / PWM1 / Timer2_cap /
IR_RX / VMIC
48
GPIO7
DIO
LED_COM7 / PTA_GRANT / LCD_SEG1 / SPDIF_RX /
PWM0 / UART1_TX / FMCLKOUT / I2STX0_DOUT /
I2SRX0_DIN / I2SRX1_DIN / Timer3_cap / SD1_DAT3
49
VCC
PWR
Digital IO PWR
50
DC5V
PWR
5.0V Voltage
51
BAT
PWR
Battery Voltage input
52
GND
GND
GND
53
ONOFF
AI
ON/OFF reset signal
54
RTCVDD
PWR
RTC power
55
GPIO19
DIO
Bit19 of General purpose I/O port
LCD_SEG17 / TWI_SDA / Timer3_cap
56
GPIO3
DIO
LED_COM3 / LCD_CEB / LCD_COM3 / SPI1_CLK /
UART0_TX / I2STX0_DOUT / I2SRX0_DIN / I2SRX1_DIN /
Timer3_cap / SPI2_CLK
57
GPIO1
DIO
LED_COM1 / LCD_RS / LCD_COM1 / TWI_SDA / PWM3 /
UART0_CTS / I2STX0_BCLK / I2SRX0_BCLK / I2SRX1_BCLK
/ Timer3_cap / SPI2_MISO
58
GPIO2
DIO
LED_COM2 / LCD_RDB / LCD_COM2 / SPI1_MOSI / PWM2 /
UART0_RX / LRADC4 / I2STX0_LRCLK / I2SRX0_LRCLK /
I2SRX1_LRCLK / Timer2_cap / SPI2_MOSI
59
GPIO0
DIO
LED_COM0 / LCD_WRB / LCD_COM0 / TWI_SCL / PWM1 /
UART0_RTS / I2STX0_MCLK / I2SRX0_MCLK/
I2SRX1_MCLK
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4.ELECTRICAL CHARACTERISTIC
4.1 Absolute maximum ratings
4.2
Recommended
power supply
4.3 Regulators maximum output current
The output voltages are precisely within ±5%, providing maximum output currents when
voltages drop to 95%. Table7-1 shows data of maximum output current.
Rating
Symbol
Min
Max
Unit
Ambient Temperature
Tamb
-25
85
°C
Storage
temperature
Tstg
-55
+150
°C
ESD Stress voltage
Vesd (Human body model)
4000
-
V
Supply Voltage
DC5V
-0.3
9
V
BAT
-0.3
5
V
VCC/AVCC/SVCC
-0.3
3.6
V
VDD
-0.3
1.32
V
Input Voltage
3.3V IO
-0.3
3.6
V
1.2V IO
-0.3
1.32
V
Rating
Min
Typ
Max
Unit
BAT(Li)
3.4
3.8
4.5
V
DC5V
4.5
5.0
7.0
V
VCC/AVCC/SVCC
2.8
3.1
3.4
V
VDD/RTCVDD
1.08
1.2
1.32
V
VREF
--
1.5
--
V
ONOFF
--
--
1.32
V
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4.3.1 Regulators Power Down
If the system is to operate from an external power supply, then the internal linear regulators
are powered down automatically.
4.3.2 Reference Voltage
There is a build-in 1.5V-reference voltage output—VREFI.
4.3.3 A/D Converters
There are 10 bits A/Ds for system monitor, the input voltage range of which is 0V to SVCC @
LRADC2~11 pin , 1.1V to 4.8V at VBAT pin, 0V to 6.0V at DC5V pin, 0V to SVCC at LRADC1
pin ,-40~120℃ for temp sensor.
For LRADC1~11, 1LSB = 3.6V/(2^10) = 3.52mV;
For BATADC, 1LSB = 4.8V/(2^10) =4.69mV;
For DC5V, 1LSB = 6V/(2^10) = 5.86mV;
For SENSADC, T=160/1024*data (decimal) - 40℃;
When the input voltage is V, the related ADC data n = V/(3.6/2^10).
Block name
Output Voltage
Load capacity
VCC
2.7~3.4V
300mA
AVCC
VCC-0.15V
50mA
VDD
0.8~1.5V
70mA
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4.4 Audio ADC Parameters
4.5 Stereo DAC Parameters
Digital to Analogue Converter
Parameter
Conditions
Min
Typ
Max
Unit
Resolution
-
-
-
20
Bits
Output Sample
Rate
-
8
-
48
kHz
SNR
fin = 1kHz@0dBFS input
B/W = 22Hz~22kHz
Fs=48kHz,Load=16Ω
-
-
98
-
dB
A -
Weighting
-
101
-
dB
Pre-Amplifier
Parameter
Conditions
Min
Typ
Max
Unit
Full Scale Input
Voltage
THD+N \< 1%
-
-
2.8
Vpp
Analogue gain
AUX OP
-
-12
-
7.5
dB
MIC OP
Single Ended
26
-
39
dB
Full Differential
32
-
45
dB
Analogue to Digital Converter
Resolution
-
-
-
24
Bits
Input Sample Rate
-
8
-
48
kHz
SNR
fin = 1kHz@Full Scale Input Voltage
B/W = 22Hz~22kHz
Fs=48kHz
-
96
-
dB
Dynamic Range
fin = 1kHz@-40dBFS Input Voltage
B/W = 22Hz~22kHz
Fs=48kHz
-
94
-
dB
THD+N
fin = 1kHz(input=1.6Vpp)
B/W = 22Hz~22kHz
Fs=48kHz
-
-85
-
dB
Digital gain
-
0
-
45
dB
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Dynamic Range
fin = 1kHz@-48dBFS input
B/W = 22Hz~22kHz
Fs=48kHz,Load=16Ω
-
-
98
-
dB
A -
Weighting
-
101
-
dB
THD+N
fin = 1kHz@0dBFS input
B/W = 22Hz~22kHz
Fs=48kHz,Load=16Ω
-
-
-87
-
dB
Digital gain
-
<-98
-
24
dB
Stereo crosstalk
fin = 1kHz@0dBFS input
-
-
-78
-
dB
PWR Amplifier
Analogue gain
-
-98
-
0
dB
Max
Amplitude/PWR
fin = 1kHz@0dBFS input
Fs=48kHz,Load=16Ω
Single Ended
-
-
536
mVrms
Output
-
-
18
mW
fin = 1kHz@0dBFS input
Fs=48kHz,Load=16Ω
Direct drive
-
-
536
mVrms
Output
-
-
18
mW
fin = 1kHz@0dBFS input
Fs=48kHz,Load=10Ω
Full
Differential
Output
-
-
1.82
Vrms
4.6 RF characteristics
Receiver
Average
Bluetooth
Spec
Transmitter
Average
Bluetooth
Spec
Unit
Sensitivity
at0.1 BER
2402MHz
-90
<=-70
Output
Power
2402MHz
7.2
-6~+10
dBm
2441MHz
-90
2441MHz
7.2
dBm
2480MHz
-90
2480MHz
7.2
dBm
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5. REFLOW PROFILE
Reflow number of times: ≤ 2times
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6. PACKAGING INFORMATION
1. BLUETOOTH
®
Module: JS-BTM235E
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Responsible Party Name : Empower Tribe Innovations US Inc.
Address: 901 Grier Dr. Las Vegas, NV, 89119, USA
Email address: [email protected]
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.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
a. This device may not cause harmful interference, and
b. This device must accept any interference received, including interference that may cause undesired
operation.
Important information:
Changes or modifications to the equipment not expressly approved by Music Tribe can void the user’s
authority to use
the equipment.
Caution!
The manufacturer is not responsible for any radio or TV interference caused by unauthorized
modification to this equipment. Such modifications could void the user authority to operate the
equipment.
FCC RF Radiation Exposure Statement:
1. This Transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
2. This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance of 20
centimeters between the radiator and your body.
Caution!
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and
Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two
conditions:
1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation
of the device.
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This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator
and your body.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR
d’Innovation, Sciences et Développement économique 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’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en
compromettre le fonctionnement
Cet appareil est conforme à IC l’exposition aux rayonnements limites fixées pour un environnement non
contrôlé. Cet appareil doit être installé et utilisé avec une distance minimale de 20 cm entre le radiateur
et votre corps. Cet transmetteur ne doit pas être co-situé ou opérant en liaison avec toute autre antenne
ou transmetteur.
