ST SPC574S-DISP Sphaero Discovery+ Manuale utente

Introduction

This manual provides information to application developer on how to set and to use the SPC574S-DISP microcontroller

evaluation board.

SPC574S-DISP Sphaero Discovery+

UM2619

User manual

UM2619 - Rev 1 - September 2019

For further information contact your local STMicroelectronics sales office.

www.st.com

1SPC574S-DISP Discovery+ board

The SPC574S-DISP is a board based on the SPC574S60E3, 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 an USB to 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.

Figure 1. SPC574S-DISP board

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.

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SPC574S-DISP Discovery+ board

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1.1 Debug interface

• 14-pins JTAG interface.

• USB integrated programmer debugger.

1.2 I/O interface and connectors

• PSU plug (+12 V).

• CAN with DB9 connector.

• LIN and FlexRay, 2 pins.

• UART (2x4 pin – not assembled).

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Debug interface

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2Hardware description

2.1 Power supply section

The external DC supply must be plugged in X1; the switch S1 allows to disconnect the external DC source.

2.1.1 External power supply

The voltage regulators, U1 and U2 are used to generate 5 V and 1.2 V respectively. U3 provide 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

2.1.2 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

2.2 Crystal oscillator

The external oscillator is connected to a 40 MHz crystal (X2).

2.3 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.

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Hardware description

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2.4 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]

2.5 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.

2.6 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), a ST's free integrated

development environment. To download the debugger software and to activate license refer to the PLS website.

Jumper options allow to configure the board to be programmed with external programmer by using JTAG port.

Removing the solder jumper from SB1 to SB7, the integrated programmer is disconnected and then JTAG port

will be enabled to program the microcontroller with a different HW tool.

2.7 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).

2.8 FlexRay

The U8 is the transceiver to manage the FlexRay communication; the outputs are connected to P1.

2.9 LIN and UART

The LINFlex supports LIN Master mode, LIN Slave mode and UART mode. U7 is the transceiver to support the

LIN communication.

2.10 4x40 connector

The I/O microcontroller pins are connected to a 4x40 pin array (connector ADG1A and ADG1B), an additional

connector 2x40 pin, (AGD1C), can be assembled to support further applications.

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User LEDs

UM2619 - Rev 1 page 5/9

Appendix A

A.1 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.

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Revision history

Table 4. Document revision history

Date Version Changes

24-Sep-2019 1 Initial release.

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UM2619 - Rev 1 page 7/9

Contents

1SPC574S-DISP Discovery+ board ..................................................2

1.1 Debug interface ................................................................3

1.2 I/O interface and connectors .....................................................3

2Hardware description ..............................................................4

2.1 Power supply section ...........................................................4

2.1.1 External power supply.....................................................4

2.1.2 Test points..............................................................4

2.2 Crystal oscillator ...............................................................4

2.3 Reset section ..................................................................4

2.4 User LEDs ....................................................................5

2.5 User pushbuttons and ADC ......................................................5

2.6 Integrated USB programmer/debugger and JTAG port ...............................5

2.7 CAN bus ......................................................................5

2.8 FlexRay ......................................................................5

2.9 LIN and UART .................................................................5

2.10 4x40 connector ................................................................5

A.1 Precautions ...................................................................6

Revision history ........................................................................7

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Contents

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IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST

products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST

products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of

Purchasers’ products.

No license, express or implied, to any intellectual property right is granted by ST herein.

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.

ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service

names are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

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