STEVAL-IDB008V2 Data Brief
Evaluation platform based on the BlueNRG-2
Summary Table
| STEVAL-IDB008V2 evaluation platform based on the BlueNRG-2 | STEVAL-IDB008V2 |
|---|---|
| Bluetooth low energy wireless system-on-chip | BlueNRG-2 |
Features
- Bluetooth® SMART board based on the BlueNRG-2 Bluetooth low energy system on chip
- Associated BlueNRG-2 development kit SW package including firmware and documentation
- Up to +8 dBm available output power (at antenna connector)
- Excellent receiver sensitivity (-88 dBm)
- Very low power consumption: 7.7 mA RX and 8.2 mA TX at +0 dBm
- Bluetooth® SMART v5.0 compliant, supports master, slave, simultaneous master-and-slave roles and Bluetooth low energy extended data length feature
- New integrated balun BALF-NRG-02D3 which integrates a matching network and harmonics filter
- SMA connector for antenna or measuring equipment
- 3 user LEDs
- 2 user buttons
- 3D digital accelerometer and 3D digital gyroscope
- MEMS pressure sensor with embedded temperature sensor
- RoHS compliant
Description
The STEVAL-IDB008V2 evaluation platform is based on the BlueNRG-2, low power Bluetooth® smart system on chip with 256 KB Flash, 24 KB RAM, compliant with the Bluetooth® SMART v5.0 specification, supporting master, slave and simultaneous master-and-slave roles and the Bluetooth low energy extended data length feature.
The STEVAL-IDB008V2 also provides a set of hardware resources for implementing a wide range of application scenarios: sensor data (accelerometer, pressure and temperature sensor), remote control (buttons and LEDs) and debug message management through USB virtual COM. Three power options are available (USB only, battery only, and external power supply plus USB) for high application development and testing flexibility.
Schematic Diagrams
Figure 1: STEVAL-IDB008V2 - JTAG
This diagram illustrates the JTAG interface connection via a 2x10 HDR straight male connector (CN7). It details pins such as DIO0, JTMS-SWTDIO, JTCK-SWTCK, DIO1, and RESETN, connecting to the SWD interface. Voltage compatibility for ST Link (3.0-3.6V, 5V tolerant) and IAR J-Link (1.2-3.6V, 5V tolerant) is noted. The connector is grounded.
Figure 2: STEVAL-IDB008V2 - Arduino Connection
This schematic shows the connections for an Arduino interface, utilizing headers CN1, CN2, CN3, and CN4. It depicts various digital I/O pins (DIO0-DIO14), RESETN, and VBLUE connections, along with associated resistors and test points.
Figure 3: STEVAL-IDB008V2 Circuit Schematic
This is a detailed circuit schematic of the STEVAL-IDB008V2. It features the BlueNRG-2 SoC (U1) and the BALF-NRG-02D3 balun (U12). Key connections include I2C, SPI, UART, GPIOs, crystal oscillators (XTAL_LS, XTAL_HS), power supply inputs (VBAT1, VBAT2, VBAT3, VBLUE1), user LEDs, user buttons, and an SMA connector (J2) for external antenna or measurement. Jumpers (JP1, JP2, JP4, JP5) are shown for configuration. Power management components, including a voltage regulator (U3), are also depicted.
Figure 4: STEVAL-IDB008V2 - Power Managements
This diagram illustrates the power management circuitry. It shows the USB_5V input, a voltage regulator (U3, LDS3985PU33R) providing VDD, a battery holder connection, and associated decoupling capacitors (C22, C23, C24, C33). Jumpers (JP1, JP2, JP3) are present for power selection and configuration.
Figure 5: STEVAL-IDB008V2 - Sensors
This schematic details the sensor interfaces. It shows the LPS25HB pressure sensor (U6) connected via I2C (SCL, SDA) and the LSM6DS3 3D digital accelerometer and gyroscope (U7) connected via SPI (SPI_IN, SPI_OUT, SPI_CLK, SPI_CS) and I2C (SCL, SDA). It includes supporting resistors and capacitors for these sensors.
Figure 6: STEVAL-IDB008V2 - Buttons and LEDs
This diagram illustrates the user interface components. It shows the connections for three user buttons (SW1, SW2, SW3) and three user LEDs (DL1 - YELLOW, DL2 - RED, DL3 - BLUE). The buttons are connected to DIO pins via pull-down resistors, and the LEDs are connected to DIO pins via current-limiting resistors.
Figure 7: STEVAL-IDB008V2 - Microcontroller
This schematic depicts the STM32L151CBU6 microcontroller (U8), a 32-bit ARM Cortex-M3 based MCU with 128 KB Flash and 16 KB RAM. It shows connections for USB, UART (USART1), SPI, JTAG (JTMS, JTCK, JTDO, JTDI), GPIOs, and an external 8MHz crystal oscillator (X1). Various power supply (VDD1, VDD2, VDD3, VLCD) and ground (VSSA, VSS_1, VSS_2, VSS_3) pins are also illustrated.
Figure 8: STEVAL-IDB008V2 - USB
This diagram shows the USB micro-B connector (CN5) and the associated USB overvoltage protection IC (U9, USBLC6-2SC6). It details the connections for USB data lines (DP, DM), VBUS, and ID, linking them to the microcontroller's USB interface.
Figure 9: STEVAL-IDB008V2 - JTAG for Micro
This schematic illustrates the JTAG interface connector (CN6) for the STM32 microcontroller, providing connections for JTMS, JTCK, JTDO, and JTDI.
Figure 10: STEVAL-IDB008V2 - Level Translator
This diagram shows the ST2378E level translator IC (U10), used to interface signals between different voltage domains, likely between the BlueNRG-2 and the STM32 microcontroller or other peripherals.
Figure 11: STEVAL-IDB008V2 - Switch
This schematic depicts a switch configuration (U11) for selecting SPI connectivity to the BlueNRG-2. It includes jumpers (1-2SEL, 3-4SEL) to enable or disable the SPI connection. Test points (TP1, TP2, TP3) for ground are also shown.
Revision History
| Date | Version | Changes |
|---|---|---|
| 11-Jan-2018 | 1 | Initial release. |
| 23-Jan-2018 | 2 | Updated: Section 1 Schematic diagrams for STEVAL-IDB008V2. |
| 13-Feb-2018 | 3 | Fixed figure 7 |
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