Product Descriptions
BU03 Kit is a UWB development board. This development board is a test and evaluation board designed based on the BU03 transceiver module and equipped with an ST controller. The BU03 module on the board integrates onboard antenna, RF circuit, and power management. BU03 Kit can be used in bidirectional ranging or TWR positioning systems, with a positioning accuracy of up to 10 centimeters and supporting data rates of up to 6.8Mbps. Widely applicable in fields such as the Internet of Things (IoT), mobile devices, wearable electronic devices, smart homes, etc
Product Specifications
| 模组型号 Module model | BU03-Kit |
| 模组封装 Module packaging | DIP-40 |
| 尺寸(mm) Size(mm) | 35.56*55.00(±0.2)MM |
| 天线形式 Antenna form | 板载陶瓷天线 Onboard ceramic antenna |
| 中心频点 Center frequency point | CH5(6489.5MHz)、CH9(7987.2MHz) |
| 工作环境 Work environment | -40℃ ~85℃ |
| 存储环境 Storage environment | -40℃~125°C,<90%RH |
| 供电范围 Power supply range | 供电电压USBType-C或者插针3.3或者5V供电。供电电流≥500mA The power supply voltage is USB Type-C or pin 3.3 or 5V. Supply current ≥500mA |
| 支持接口 Support interfaces | SPI，UART,I2C |
| 可用IO口数量 Number of available IO ports | 20 |
Module power consumption
The following power consumption data is based on a 3.3V power supply and measured at an ambient temperature of 25 ° C.
| 模式 Mode | 最小值 Minimum value | 平均值 Average value | 最大值 Maximum value | 单位 unit |
| CH5 发射，速率0.85Mbps CH5 transmission, speed 0.85Mbps | - | 17.03 | - | mA |
| CH5 发射，速率6.81Mbps CH5 transmission, speed 6.81Mbps | - | 15.06 | - | mA |
| CH9 发射，速率0.85Mbps CH9 transmission, speed 0.85Mbps | - | 24.85 | - | mA |
| CH9 发射，速率6.81Mbps CH9 transmission, speed 6.81Mbps | - | 22.6 | - | mA |
| CH5 接收，速率0.85Mbps CH5 reception, speed 0.85Mbps | - | 39.81 | - | mA |
| CH5 接收，速率6.81Mbps CH5 reception, speed 6.81Mbps | - | 40.01 | - | mA |
| CH9 接收，速率0.85Mbps CH9 reception, speed 0.85Mbps | - | 49.23 | - | mA |
| CH9 接收，速率6.81Mbps CH9 reception, speed 6.81Mbps | - | 48.05 | - | mA |
| 开机瞬间电流 Instantaneous current during startup | - | 174 | - | mA |
| 深度睡眠 deep sleep | - | 179 | - | mA |
The BU03 Kit development board has a total of 40 pin connections, as shown in the schematic diagram. The pin function definition table is the interface definition:
| ① | POWER 电源指示灯，通电亮红灯; POWER power indicator light, red light on when powered on; |
| ② | RUN 运行指示灯，运行成功后指示灯常亮; RUN running indicator light, the indicator light stays on after successful operation; |
| ③ | UWBTX通信指示灯 1，有数据发送闪烁; UWBTX communication indicator light 1, flashing with data transmission; |
| ④ | UWBRX通信指示灯 2，有数据接收闪烁; UWBRX communication indicator light 2, flashing for data reception; |
| ⑤ | SFD，未定义功能的 LED; SFD， LEDs with undefined functions; |
| ⑥ | RXOK，未定义功能的 LED; RXOK， LEDs with undefined functions; |
| ⑦ | 插针，STM32 串口烧录BOOT控制; Pin, STM32 serial port burning BOOT control; |
| ⑧ | BOOT 烧录控制按键; BOOT burning control button; |
| ⑨ | RESET 按键，复位按键; RESET button, reset button; |
| ⑩ | 定位测距数据交互口; Positioning and ranging data exchange port; |
| ⑪ | 串口，支持烧录和 AT指令交互; Serial port, supporting burning and AT command interaction; |
Product Pin definition
| 脚序 Foot sequence | 名称 Name | 功能说明 Function Description |
| 1 | PB12 | PB12,SPI2_NSS/I2C2_SMBA1/USART3_CK/TIM1_BKIN |
| 2 | PB13 | PB13,SPI2_SCK/USART3_CTS/TIM1_CH1N |
| 3 | PB14 | PB14,SPI2_MISO/USART3_RTSTIM1_CH2N |
| 4 | PB15 | PB15,SPI2_MOSI/TIM1_CH3N |
| 5 | EXTON | EXTON_PA8 |
| 6 | TX1 | UART1_TX |
| 7 | RX1 | UART1_RX |
| 8 | WAKEUP | PA0WKUP,PA0,WKUP/USART2_CTS(9)/ADC12_INO/TIM2_CH1_ETR |
| 9 | LED_RUN | PA1_LED_RUN |
| 10 | PA15 | JTDI,,TIM2_CH1_ETR/PA15/SPI1_NSS |
| 11 | PA3 | PA3,,USART2_RX/ADC12_IN3/TIM2_CH4 |
| 12 | PB4 | JNTRST.TIM3_CH1/PB4/SPI1_MISO |
| 13 | PB8 | PB8.TIM4_CH3,I2C1_SCL/CANRX |
| 14 | PB9 | PB9,TIM4_CH4.I2C1_SDA/CANTX |
| 15 | V-BAT | V-BAT |
| 16 | GND | GND |
| 17 | SWDIO | SWDIO |
| 18 | SWCLK | SWCLK |
| 19 | 3V3 | 3V3 power supply |
| 20 | 5V | 5V power supply |
| 21 | 3V3 | 3V3 power supply |
| 22 | GND | GND |
| 23 | PC13 | PC13-TAMPER-RTC,PC13,TAMPER-RTC |
| 24 | NRST | NRST |
| 25 | I2C1_SDA | I2C1_SCL/PB7 |
| 26 | I2C1_SCL | I2C1-SDAPB7 |
| 27 | DW_RSTN | RSTN |
| 28 | I2C2_SDA | PB11,I2C2_SDA/USART3_RX,TIM2_CH4 |
| 29 | I2C2_SCL | PB10,12C2_SCL/USART3_TX.TIM2_CH3 |
| 30 | PA2 | PA2,USART2_TX/ADC12_IN2/TIM2_CH3 |
| 31 | PA3 | PA3,USART2_RX/ADC12_IN3/TIM2_CH4 |
| 32 | SPI1_CSN | SPI1_CSN |
| 33 | SPI1_MOSI | SPI1_MOSI |
| 34 | SPI1_MISO | SPI1_MISO |
| 35 | SPI1_CLK | SPI1_CLK |
| 36 | DW_IRQ | DW_IRQ/GPIO8 |
| 37 | IO4 | IO4/EXTPA |
| 38 | IO5 | IO5/EXTTXE/SPIPOL |
| 39 | IO6 | IO6/EXTRXE/SPIPHA |
| 40 | IO7 | DW_SYNC |
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