ST UM2619 SPC574S-DISP Sphaero Discovery+ User Manual
- June 6, 2024
- ST
Table of Contents
UM2619
User manual
SPC574S-DISP Sphaero Discovery+
Introduction
This manual provides information to application developers on how to set and
to use the SPC574S-DISP microcontroller evaluation board.
UM2619 – Rev 2 – March 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
SPC574S-DISP Discovery+ board
The SPC574S-DISP is a board based on the SPC574S64E3, a microcontroller high-
performance core, 32-bits power architecture technology CPU. The several
interfaces including GPIO’s, peripherals such as DSPI, LIN, UART, ISO CAN-FD
make the SPC574S-DISP an efficient starter kit for the customer to quick
evaluate the microcontroller as well as to develop and debug applications.
An integrated programmer debugger allows debugging and programming the
microcontroller without additional tools. The same circuit allows enabling a
USB to the serial communication channel (USB Virtual COM port). A standard
JTAG port (14 pin 0.1 inch.) allows programming the microcontroller by using
external debug and programmer tools.
The SPC574S-DISP evaluation kit consists of:
- SPC574S-DISP Discovery board (Figure 1).
- USB type A to mini-B cable.
- 12 V DC power supply (EU Plug).
Free ready-to-run application firmware examples are available inside
SPC5Studio (http://www.st.com/spc5studio) to support a quick evaluation and
development process.
The PCB, the components, and all the HW parts assembled in the board meet
requirements of the applicable RoHS directives.
Debug interface
- 14-pins JTAG interface.
- USB integrated programmer debugger.
I/O interface and connectors
- PSU plug (+12 V).
- CAN with DB9 connector.
- LIN and FlexRay, 2 pins.
- UART (2×4 pin – not assembled).
Hardware description
Power supply section
The external DC supply must be plugged in X1; the switch S1 allows to
disconnect the external DC source.
External power supply
The voltage regulators, U1 and U2 are used to generate 5 V and 1.2 V
respectively. U3 provides 3.3 V.
The LEDs LD1, LD2, LD3 and LD4 are all ON only when the power supply section
works properly and the switch S1 is set in ON position.
Table 1. PSU section – LEDs description
| Item | Function |
|---|---|
| LD1 | Vext (+12 V) |
| LD2 | 5 V SMPS |
| LD3 | 3.3 V LDO |
| LD4 | 1.2 V SMPS |
Test points
Some test pins are present to monitor the supply voltage levels.
Table 2. PSU section – Test points
| Name | Signal/Voltage |
|---|---|
| TP1 | 12 V PSU |
| TP2 | 5 V SMPS |
| TP3 | 1.2 V SMPS |
| TP7 | 3.3 V |
Crystal oscillator
The external oscillator is connected to a 40 MHz crystal (X2).
Reset section
The reset section is based on the U5. The RESET signal is driven to low level in these two conditions:
- When the VDD_HV_IO_main level is lower than the reset threshold voltage (nominal value: 2.63 V).
- When the pushbutton S2 is pressed; the reset pulse width is fixed. JP9 allows disconnecting the microcontroller to the U5 output.
User LEDs
Three LEDs (LD11, LD12 and LD13) are available for user purposes. The jumpers
JP26, JP27 and JP28 allow disconnecting the cathode of each LED’s then PE[11],
PE[12] and PE[13] can be used for a different purpose.
Table 3. User LEDs
| LED | µC Pin – Function |
|---|---|
| LD11 | PE[11] |
| LD12 | PE[12] |
| LD13 | PE[13] |
User pushbuttons and ADC
Three pushbuttons (PB2, PB3 and PB4) are present and they can be used during the application development or debugging to have an user interface. These pushbutton are connected to the ports PC[15], PD[0] and PE[0] with the jumpers JP22, JP23 and JP 24. The trimmer R56 and R60 allows the user to evaluate the ADC. Removing JP21 and JP25 the ports PI[1] and PI[2] will be disconnected to the cursor of the R56 and R60.
Integrated USB programmer/debugger and JTAG port
The integrated debugger allows the user to program and to debug the software
applications. The integrated tool is based on the UDE PLS software and the
device FTDI2232H.
The SPC574S-DISP discovery board includes a full-featured, perpetual code-
limited PLS software license. The debugger serial number is reported on a
label applied on the board.
The integrated debugger SW is accessible via SPC5Studio
(http://www.st.com/spc5studio), an ST’s free integrated development
environment. To download the debugger software and to activate the license
refers to the PLS website.
Jumper options allow configuring the board to be programmed with an external
programmer by using the JTAG port.
Removing the solder jumper from SB1 to SB7, the integrated programmer is
disconnected and then the JTAG port will be enabled to program the
microcontroller with a different HW tool.
CAN bus
U6 is the CAN communication transceiver. The jumper JP10 connects the termination resistor for CAN bus (120 Ω) while TP11 and TP12 allow monitoring the output signals CANL and CANH respectively. The CAN Rx and Tx signals are connected to J1 (DB9 connector).
FlexRay
The U8 is the transceiver to manage the FlexRay communication; the outputs are connected to P1.
LIN and UART
The LINFlex supports LIN Master mode, LIN Slave mode and UART mode. U7 is the transceiver to support the LIN communication.
4×40 connector
The I/O microcontroller pins are connected to a 4×40 pin array (connector ADG1A and ADG1B), an additional connector 2×40 pin, (AGD1C), can be assembled to support further applications.
Appendix A
Precautions
The following precautions are recommended when using the SPC574S-DISP:
- Do not modify and not plug external parts or wires the board when it is supplied
- Do not supply the board with AC source or with a DC source higher than 12 V.
- The connectors and cables should be plugged and removed when the board is not supplied and the USB cable disconnected.
- To use antistatic tools.
Revision history
Table 4. Document revision history
| Date | Version | Changes |
|---|---|---|
| 24-Sep-2019 | 1 | Initial release. |
| 12-Mar-2021 | 2 | The updated part number in Section 1 SPC574S-DISP Discovery+ |
board.
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