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detail-heading">

BM64

微芯

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0.00
RMB
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Overview

Compliance Class 1，Class 2；
Certified to the United States (FCC), Innovation,Science and Economic Development Canada (ISED), European Economic Area (CE), Korea (KCC), Taiwan (NCC), Japan (MIC), China
(SRRC), and Brazil (ANATEL) radio regulations
 
Supports Bluetooth 5.0 dual-mode
- BDR/EDR transport for audio, voice, andSPP data exchange
- BLE transport for proprietary transparentservice and Apple Notification Center Service(ANCS) data exchange
 
High-speed HCI-UART interface (supports up to921,600 bps)
 
Peripherals
• Built-in lithium-ion and lithium-polymer batterycharger (up to 350 mA)
• Integrated 1.8V and 3V configurable switchingregulator and Low-Dropout (LDO) regulator
• Built-in ADC for battery monitoring and voltagesense
• Built-in ADC for charger thermal protection
• Built-in Undervoltage Protection (UVP)
• An auxiliary input port for external audio input
• Two LED drivers
• Multiple I/O pins for control and status
 
DSP Audio Processing
• Supports 64 kbps A-Law, A-Law PCM format/Continuous Variable Slope Delta (CVSD) modulationfor SCO channel operation
• Supports 8/16 kHz noise suppression
• Supports 8/16 kHz echo cancellation
• Supports Modified Sub-Band Coding (MSBC)decoder for wide band speech
• Built-in High Definition Clean Audio (HCA) algorithmsfor both narrow band and wide bandspeech processing
• Packet loss concealment (PLC)
• Built-in audio effect algorithms to enhance audiostreaming
• Supports Serial Copy Management System(SCMS-T) content protection
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Features

• Qualified for Bluetooth v5.0 specification
• Supports A2DP 1.3, AVRCP 1.6, HFP 1.6, HSP
1.2 and SPP 1.2
• Supports Bluetooth 5.0 dual-mode (BDR/EDR/
BLE) specifications
• Stand-alone module with on-board PCB antenna
and Bluetooth stack
• Supports high resolution up to 24-bit, 96 kHz
audio data format
• Supports Bluetooth Low Energy data rate up to
1Mbits/s
• Supports connection of two hosts with HFP/A2DP
profiles simultaneously
• Transparent UART mode for seamless serial data
over UART interface
• Supports virtual UART communication between
host MCU and smartphone applications by Bluetooth
SPP or BLE link
• Easy to configure with Windows® GUI or directly
by external MCU
• Supports firmware field upgrade
• Supports one microphone
• Compact surface mount module:
- BM62: 29 x 15 x 2.5 mm
- BM64: 32 x 15 x 2.5 mm
• Castellated surface mount pads for easy and
reliable host PCB mounting
• RoHS compliant
• Ideal for portable battery-operated devices
• Internal battery regulator circuitry
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Features

__
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Block Diagram

__
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Application Note

• Portable speaker • Multiple speakers • Headset
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Development Board

__
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Core Type

-
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CPU Clock Speed

__
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CPU Architecture

__
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CPU Features

__
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Bluetooth Version

5
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Operating Frequency [Max] (MHz)

__
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Flash (kB)

__
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Cache

-
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SRAM (kB)

__
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EEPROM (kB)

__
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Debugging

__
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Upgrade Type

Manual
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Crystal

no
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on chip (PLL)

no
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crystal (optional)

no
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on-chip RC

no
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External clock

no
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Timers [Number, bits]

no
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Real-Time Clock

no
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Watchdog timer

no
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GPIO

12
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Pins

43
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Pitch

__
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Channels

__
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ADC [Number, bits]

16-bit ADC with 92 dB SNR
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True Random Number Generator

__
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Analog comp

no
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low-power comp

no
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Temperature sensor

有
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NFC Tag

__
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SPI

__
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DAC [Number, bits]

20-bit DAC with 98 dB SNR
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UART

__
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SSI

__
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PWM [Number, bits]

__
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I2C

__
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TWI

no
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QDEC

-
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PDM

有
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USB

no
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SPI

no
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Quad SPI

-
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I2S

no
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Debug interface

-
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Human Machine Interface

-
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Programmable channels

__
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Fixed channels

__
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Channel groups

__
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Supply Voltage [Min to Max] (V)

3.2 V~ 4.2 V
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Low-Dropout (LDO) regulator
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On-chip VBUS

no
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Regulated supply for external components

1.8V and 3V configurable switching regulator
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Power fail

no
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Crypto Accelerator

__
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Public Key Hardware Accelerator

__
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Accelerator

__
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Security

128-bit AES
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__
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Current

Class 1: +15 dBm;
Class 2: +2 dBm;
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Sensor Controller

__
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Standby

__
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Transceiver Compatible

__
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Receiver Sensitivity

-90 dBm (2 Mbps EDR)
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Output Power

__
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Frequency Regulation

__
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Protocols

__
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Bluetooth 5 PHYs

2 Mbps
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bluetooth 5.1 support

Yes
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 512
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Dimension

32 x 15 x 2.5 mm
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 516
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Package Type

Surface mount module
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 520
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DSP RAM

__
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 524
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DSP Clock Speed

64 kbps
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 528
detail-adm">

DSP Clock Speed

64 kbps
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 532
detail-adm">

Voice Services

Sub-band Coding (SBC) and optional Advanced Audio Coding (AAC) decoding
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 536
detail-adm">

General

__
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 541
detail-links">


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/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 548
detail-facilities info-right">
FaLang translation system by Faboba

Login

mysqli object is already closed (500 Whoops, looks like something went wrong.)

Error

HTTP 500 Whoops, looks like something went wrong.

mysqli object is already closed

Exception

Error

in /var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php (line 318)
  1. */
  2. public function disconnect()
  3. {
  4. // Close the connection.
  5. if (\is_callable([$this->connection, 'close'])) {
  6. $this->connection->close();
  7. }
  9. parent::disconnect();
  10. }
in /var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php -> close (line 318)
  1. */
  2. public function disconnect()
  3. {
  4. // Close the connection.
  5. if (\is_callable([$this->connection, 'close'])) {
  6. $this->connection->close();
  7. }
  9. parent::disconnect();
  10. }
in /var/www/html/libraries/vendor/joomla/database/src/DatabaseDriver.php -> disconnect (line 496)
  1. *
  2. * @since 2.0.0
  3. */
  4. public function __destruct()
  5. {
  6. $this->disconnect();
  7. }
  9. /**
  10. * Alter database's character set.
  11. *
DatabaseDriver->__destruct()

Stack Trace

Error 
Error:
mysqli object is already closed

  at /var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318
  at mysqli->close()
     (/var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318)
  at Joomla\Database\Mysqli\MysqliDriver->disconnect()
     (/var/www/html/libraries/vendor/joomla/database/src/DatabaseDriver.php:496)
  at Joomla\Database\DatabaseDriver->__destruct()