User's Manual
Table Of Contents
- 1 Features
- 2 Product marking
- 3 System requirements
- 4 Development toolchains
- 5 Demonstration software
- 6 Ordering information
- 7 Hardware layout and configuration
- 7.1 Nucleo-68 board
- Figure 2. Nucleo-68 hardware block diagram
- Figure 3. Nucleo-68 board (top view)
- Figure 4. Nucleo-68 board (bottom view)
- Figure 5. Nucleo-68 board mechanical drawing
- Figure 6. Nucleo-68 board schematics
- Figure 7. Nucleo-68 board schematics - RF part
- Figure 8. Nucleo-68 board schematics - Connectors
- Figure 9. Nucleo-68 board schematics - Power management
- Figure 10. Nucleo-68 board schematics - ST-Link/V2-1
- 7.2 USB dongle
- 7.3 Getting started
- 7.4 Embedded ST-LINK/V2-1
- 7.5 Power supply and selection
- 7.6 Programing/debugging when the power supply is not from USB ST-LINK (5V_ST_link)
- 7.7 OSC clock sources
- 7.8 Reset sources
- 7.9 Virtual COM port: LPUART/USART
- 7.10 LEDs
- 7.11 Push buttons
- 7.12 Current measurement
- 7.13 Jumper configuration
- 7.1 Nucleo-68 board
- 8 Connectors
- Appendix A Nucleo-68 and USB dongle MCU IO assignment
- 9 Federal Communications Commission (FCC) and Industry Canada (IC) compliance statements
- 10 Revision history
UM2435 Rev 2 33/48
UM2435 Hardware layout and configuration
47
7.8 Reset sources
The reset signal of Nucleo board is active low and the reset sources include:
• Reset button SW4
• Embedded ST-LINK/V2-1
• Arduino™ UNO V3 connector from CN6 pin 3
• ST-Morpho connector CN7 pin 14
7.9 Virtual COM port: LPUART/USART
LPUART or USART interface of STM32 Microcontroller on the Nucleo-68 board can be
connected to STLINK/V2-1 MCU or on Shields on ST-Morpho connectors and Arduino™
UNO V3 connectors.
The LPUART/USART selection can be changed by setting related solder bridges.
Refer to Table 7 for the UART/LPUART connection to interfaces VCP or Arduino™ UART.
Table 7. LPUART1 and USART1 connections
SB Features
SB15 ON
SB18 OFF
LPUART1 (PA2/PA3) connected to Arduino™ and Morpho connector
JP5[15-16] ON
JP5[13-14] ON
SB38 ON
SB39 ON
USART1 (PB6/PB7) connected to STLINK VCP