STM32F103C8T6單片機 USB type-C接口最小系統(tǒng)核心板AD設計硬件原理圖+PCB+封裝庫文件，USB type-C接口，3.3V 5V供電排針，所有GPIO都引出，集成一路IIC Flash（AT24C32），一路SPI Flash，一個SPI 接口SD卡座子。 2層板設計，雙面布局布線，大小為45x32mm，包括完整的原理圖和PCB文件，可用Altium Designer(AD)軟件打開或修改，可直接打板，也可作為你產(chǎn)品設計的參考。
標簽： stm32f103c8t6 單片機 usb
上傳時間： 2022-01-15
上傳用戶：shjgzh
高通(Qualcomm)藍牙芯片QCC5151_硬件設計詳細指導書（官方內(nèi)部培訓手冊）共52頁其內(nèi)容是針對硬件設計、部分重要元器件選擇(ESD，F(xiàn)ilter）及走線注意事項的詳細說明。2 Power management 2.1 SMPS 2.1.1 Components specification 2.1.2 Input power supply selection 2.1.3 Minimize SMPS EMI emissions 2.1.4 Internal LDOs and digital core decoupling 2.1.5 Powering external components 2.2 Charger 2.2.1 Charger connections.2.2.2 General charger operation2.2.3 Temperature measurement during charging 2.3 SYS_CTRL 3 Bluetooth radio3.1 RF PSU component choice 3.2 RF band-pass filter3.3 Layout (天線 走線的注意事項)4 Audio4.1 Audio bypass capacitors 4.2 Earphone speaker output4.3 Line/Mic input 4.4 Headphone output optimizition5 LED pads 5.1 LED driver 5.2 Digital/Button input 5.3 Analog input5.4 Disabled 6 Reset pin (Reset#)7 QSPIinterface 8 USB interfaces 8.1 USB device port8.1.1 USB connections8.1.2 Layout notes8.1.3 USB charger detection
上傳時間： 2022-01-24
上傳用戶：XuVshu
PW4203 is a 4.5-22V input, 2A multi-cell synchronous Buck Li-Ion battery charger, suitable forportable application. Select pin is convenient for multi-cell charging. 800 kHz synchronous buckregulator integrates of 22V rating FETs with ultra low on- resistance to achieve high efficiency andsimple circuit design.The PW4203 is available in an 8-pin SOP package, provides a very compact system solution andgood thermal conductance
標簽： pw4203
上傳時間： 2022-02-11
上傳用戶：
The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specifications.The PW4055 No external sense resistor is needed, and no blocking diode is required due to theinternal MOSFET architecture.Thermal feedback regulates the charge current to limit the dietemperature during high power operation or high ambient temperature. The charge voltage is fixedat 4.2V, and the charge current can be programmed externally with a single resistor. The PW4055automatically terminates the charge cycle when the charge current drops to 1/10th the programmedvalue after the final float voltage is reached. When the input supply (wall adapter or USB supply) isremoved, the PW4055 automatically enters a low current state, dropping the battery drain currentto less than 2μA. The PW4055 can be put into shutdown mode, reducing the supply current to 25μA.The BAT pin has a 7KV ESD(HBM) capability. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presenceof an input voltage
標簽： pw4055
上傳時間： 2022-02-11
上傳用戶：jason_vip1
The PW2162 is a fully integrated, high– efficiency 2A synchronous rectified step-down converter.The PW2162 operates at high efficiency over a wide output current load range. This device offerstwo operation modes, PWM control and PFM Mode switching control, which allows a high efficiencyover the wider range of the load. The PW2162 requires a minimum number of readily availablestandard external components and is available in an 6-pin SOT23 ROHS compliant package.
標簽： pw2162
上傳時間： 2022-02-11
上傳用戶：d1997wayne
論文-基于紅外熱成像技術的豬體溫檢測與關鍵測溫部位識別63頁摘要 實現(xiàn)豬體溫測量自動化有利于實時監(jiān)測豬的健康狀況、母豬發(fā)情和排卵檢測等 生理健康狀況。本文采用紅外熱成像儀采集豬的紅外熱圖像，引入化學計量學建模 方法建立體表溫度、環(huán)境溫度與直腸溫度間的多元校正模型，同時提出兩種關鍵測 溫部位的自動檢測方法。主要結論總結如下： (1)建立了母豬體表溫度、環(huán)境溫度與母豬體溫之間的一元和多元線性回歸模型。研 究發(fā)現(xiàn)， 9個身體區(qū)域提取的體表溫度與直腸溫度呈正相關(產(chǎn)O．34～0．68)，其中， 基于耳根區(qū)域體表溫度平均值建立的一元回歸方程效果最優(yōu)，預測集相關系數(shù)RP與 均方根誤差RMSEP分別為0．66和0．420C。全特征模型相比一元線性回歸方程有更 好的預測效果，RP和RMSEP分別為0．76和O．370C。此外，應用特征選擇方法LARS． Lasso確定了7個重要特征建立簡化模型，其校正集和預測集的R分別為0．80和 0．80，RMSEs分別為0．30和0．350C。 (2)將卷積神經(jīng)網(wǎng)絡應用于生豬主要測溫部位(眼睛和耳朵區(qū)域)的直接分割。利用 python構建了四種不同結構的卷積神經(jīng)網(wǎng)絡模型FCN一1 6s、FCN．8s、U．Net一3和U． Net．4。對比分析4種卷積神經(jīng)網(wǎng)絡模型的性能，結果表明U-Net．4網(wǎng)絡結構的分割 效果最優(yōu)，平均區(qū)域重合度最高為78．75％。然而，當計算設備的計算力不夠時，可 以選用U．Net一3模型以達到較好的分割效果。 (3)提出豬只眼睛及耳根區(qū)域關鍵點的識別方法，將豬只主要測溫部位的檢測問題 轉(zhuǎn)變?yōu)橹饕獪y溫部位的定位問題。設計具有不同深度的卷積神經(jīng)網(wǎng)絡架構A．E，得 出架構E最優(yōu)。且當Dropout概率設置為0．6時模型效果最好，驗證集平均誤差和 預測集平均誤差分別為1．96％和2．65％。測試集單張豬臉關鍵點的預測誤差小于5％ 和10％的比例分別為89．5％和97．4％。模型能夠很好的定位豬臉關鍵點，用于豬只 體溫測量。 本文采用紅外熱像儀測量母豬體表溫度，通過化學計量學建模為非接觸母豬直 腸溫度測量提供了更準確、可靠的方法，同時提出兩種關鍵測溫部位的自動檢測方 法，有助于實現(xiàn)母豬體溫測量自動化，為生豬健康管理提供參考。
標簽： 紅外熱成像技術
上傳時間： 2022-02-13
上傳用戶：jiabin
該問題由某客戶提出，發(fā)生在 STM32F207VET6 器件上。據(jù)其工程師講述：部分芯片無法通過拉低NRST PIN產(chǎn)生復位。該現(xiàn)象一旦上電復位后無法重現(xiàn)?？蛻舻膽弥型ㄟ^外部硬件看門狗定時給NRST PIN送低電平產(chǎn)生復位。正常情況下，MCU會給外部硬件看門狗喂狗。
上傳時間： 2022-02-21
上傳用戶：
CH341系列編程器芯片usb轉(zhuǎn)串口Altium Designer AD原理圖庫元件庫CSV text has been written to file : 1.9 - CH341系列編程器芯片.csvLibrary Component Count : 56Name Description----------------------------------------------------------------------------------------------------CH311Q PC debug port monitorCH331T Mini USB Disk ControllerCH340G CH340H USB to TTL Serial / UART, USB to IrDACH340T USB to TTL Serial / UART, USB to IrDACH340R USB to IrDA, USB to RS232 SerialCH340S_P USB to Print Port / ParallelCH340S_S USB to TTL Serial / UART, pin compatible with CH341CH341A_S USB to TTL Serial / UART / I2C/IICCH341S_P USB to Print Port / ParallelCH341A_P USB to Print Port / ParallelCH341S_S USB to TTL Serial / UARTCH341S_X USB to EPP Parallel / SPI / I2C/IICCH341A_X USB to EPP Parallel / SPI / I2C/IICCH341T USB to TTL Serial / UART / I2C/IICCH345T USB to MidiCH352L_M PCI to 8255 mode 2 Parallel for MCU and 16C550 UART / IrDACH352L_P PCI to Print Port / Parallel and 16C550 UART / IrDACH352L_S PCI to Dual 16C550 UART, TTL Serial*2 / IrDA*1CH362L PCI Device / Slave only for RAM / Expansion ROMCH364F Member of CH364 chipsetsCH364P PCI Device / Slave Embedded Flash ROM, for Expansion ROMCH365P PCI Device / Slave, for I/O port or RAM / ROMCH372T USB Device / Slave for MCU, ParallelCH372A USB Device / Slave for MCU, ParallelCH372V USB Device / Slave for MCU, ParallelCH374S USB Host & Device / Slave for MCU, parallel / SPICH374T USB Host & Device / Slave for MCU, parallel / SPICH375S USB Host & Device / Slave for MCU, parallel / UART SerialCH375A USB Host & Device / Slave for MCU, parallel / UART SerialCH375V USB Host & Device / Slave for MCU, parallel / UART SerialCH411G FDC MFM encode and decodeCH421A Dual port bufferCH421S Dual port bufferCH423D I2C/IIC I/O expander, 16 GPO + 8 GPIO, 128 LEDs DriveCH423S I2C/IIC I/O expander, 16 GPO + 8 GPIO, 128 LEDs DriveCH423D_D I2C/IIC I/O expander, 16 GPO + 8 GPIO, 128 LEDs DriveCH423S_D I2C/IIC I/O expander, 16 GPO + 8 GPIO, 128 LEDs DriveCH423G I2C/IIC I/O expander, 6 GPO + 5 GPIOCH432Q Dual 16C550 UART with IrDA, parallel / SPICH432T SPI Dual 16C550 UART with IrDACH450K 6 Digits / 48 LEDs Drive & 8x6 Keyboard, I2C/IICCH450H 6 Digits / 48 LEDs Drive & 8x6 Keyboard, I2C/IICCH450L 8 Digits / 64 LEDs Drive & 8x8 Keyboard, I2C/IICCH451L 8 Digits / 64 LEDs Drive & 8x8 Keyboard, 4 Wire Interface, SPICH451S 8 Digits / 64 LEDs Drive & 8x8 Keyboard, 4 Wire Interface, SPICH451D 8 Digits / 64 LEDs Drive & 8x8 Keyboard, 4 Wire Interface, SPICH452L_2 8 Digits / 64 LEDs Drive & 8x8 Keyboard, I2C/IICCH452L_4 8 Digits / 64 LEDs Drive & 8x8 Keyboard, 4 Wire Interface, SPICH452S_2 8 Digits / 64 LEDs Drive & 8x8 Keyboard, I2C/IICCH452S_4 8 Digits / 64 LEDs Drive & 8x8 Keyboard, 4 Wire Interface, SPICH453S 16 Digits / 128 LEDs Drive, I2C/IICCH453D 16 Digits / 128 LEDs Drive, I2C/IICPCI 32Bit PCI Bus, simple / short cardPCI32 32Bit PCI BusUSB USB Port
標簽： ch341 編程芯片 usb 串口 altium designer
上傳時間： 2022-03-13
上傳用戶：
電阻-電容-電感 Altium Designer AD原理圖庫元件庫CSV text has been written to file : 0.1 - 電阻-電容-電感.csvLibrary Component Count : 35Name Description----------------------------------------------------------------------------------------------------C 貼片電容C-MLCC 獨石電容CBB CBB電容CC 瓷片電容CE 直插電解電容CE_SMD 貼片電解電容CS 直插固態(tài)電容CS_SMD 貼片固態(tài)電容CT 貼片鉭電容CX 安規(guī)X電容CY 安規(guī)Y電容L 小功率貼片電感L-AL 色環(huán)電感L-CDRH 功率屏蔽電感L-MR 功率磁環(huán)電感L-NR NR磁膠電感L-PK 工字電感L-SMD CD系列貼片線繞功率電感L-UU 共模電感PTR902 雙聯(lián)電位器帶開關R 貼片電阻R SIP9 9腳直插排阻R-8P4R 貼片排阻R-I 電流檢測電阻R-Precision 精密貼片電阻R-S 色環(huán)電阻RG 光敏電阻RK0971221 雙聯(lián)電位器帶開關RP 單聯(lián)電位器RP-SMD 貼片電位器RP-WH148 雙聯(lián)電位器RT 熱敏電阻R_MPR 5W無感水泥電阻R_VSR 壓敏電阻TMR 隧道磁電阻
標簽： 電阻元件 altium designer
上傳時間： 2022-03-13
上傳用戶：
本設計是一個基于STM32F103C8T6的單片機最小系統(tǒng)，包含原理圖、PCB、BOM文件最小系統(tǒng)包括了復位電路、晶振電路、電源排針等單片機工作必要的外圍電路，且把常用的引腳全部引出，方便研發(fā)人員將本方案嵌入到開發(fā)中。原理圖：PCB：
標簽： stm32f103c8t6 單片機 ad
上傳時間： 2022-03-18
上傳用戶：
