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detail-heading">

BM64

微芯

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0.00
元
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概述

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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特性

• 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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特性

__
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方框图

__
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应用说明

• Portable speaker • Multiple speakers • Headset
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开发板

__
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内核

-
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CPU时钟频率

__
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CPU构造

__
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CPU特性

__
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蓝牙版本

5
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频率

__
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Flash (kB)

__
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缓存

-
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SRAM (kB)

__
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EEPROM (kB)

__
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调试

__
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升级方式

Manual
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晶振

no
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PLL时钟

no
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可选晶振

no
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RC时钟

no
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外部时钟

no
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时钟 [数量, 位]

no
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实时时钟

no
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看门狗计数器

no
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GPIO

12
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针脚

43
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针距

__
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通道

__
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ADC [数量, 位]

16-bit ADC with 92 dB SNR
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真随机数发生机器

__
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模拟组件

no
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低功耗组件

no
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温度传感器

有
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NFC标签

__
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SPI

__
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DAC [数量, 位]

20-bit DAC with 98 dB SNR
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UART

__
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同步串行接口

__
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PWM [数量, 位]

__
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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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调试界面

-
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人机界面

-
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可编程通道

__
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固定通道

__
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通道组

__
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电压 [最小~最大] (V)

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

no
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可调供电输出

1.8V and 3V configurable switching regulator
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电源失效

no
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加密加速计

__
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公钥硬件加速器

__
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加速器

__
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安全

128-bit AES
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__
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 472
detail-adm">

电流

Class 1: +15 dBm;
Class 2: +2 dBm;
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传感器控制器

__
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待机

__
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兼容标准

__
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接收器灵敏度

-90 dBm (2 Mbps EDR)
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输出功率

__
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射频规范

__
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 500
detail-adm">

协议

__
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 504
detail-adm">

蓝牙5性能

2 Mbps
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 508
detail-adm">

蓝牙5.1支持

Yes
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 512
detail-adm">

尺寸

32 x 15 x 2.5 mm
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 516
detail-adm">

封装型式

Surface mount module
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 520
detail-adm">

DSP RAM

__
/var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 524
detail-adm">

DSP时钟速度

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

DSP时钟速度

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

音频控制

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">

概要

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


Warning: Trying to access array offset on null in /var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 542

Warning: Attempt to read property "label_raw" on null in /var/www/html/components/com_fabrik/views/details/tmpl/bootstrap_chip_view/default.php on line 542

/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

登陆

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()