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background image

3

Host interface and GPIO connection

The

X-NUCLEO-LED12A1

expansion board embeds four

devices and is powered by the

development board.
The devices are driven by the microcontroller via I

2

C interface, connected through the same I

2

C bus and

synchronized by a clock chain.

UM2879

Host interface and GPIO connection

UM2879

-

Rev 2

page 5/17

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Содержание X-NUCLEO-LED12A1

Страница 1: ...ing control The X NUCLEO LED12A1 expansion board comes with an additional LED panel board that houses two LEDs matrices a 6x8 white LED matrix and a 4x4 RGB matrix LED matrices can be supplied via an external power supply connected to J13 connector and by selecting the right path through J15 jumper to reach the maximum luminosity available Figure 1 X NUCLEO LED12A1 expansion board Figure 2 LED pan...

Страница 2: ...uirements The X NUCLEO LED12A1 expansion board is designed to be used with any STM32 Nucleo development board although complete testing has been performed using the NUCLEO L073RZ hosting the STM32L073RZ microcontroller 1 3 System requirements To use STM32 Nucleo development boards with the X NUCLEO LED12A1 expansion board the following software and hardware are required an STM32 Nucleo 64 developm...

Страница 3: ...RZ X NUCLEO LED12A1 NC CN6 Power 1 IOREF 2 NC RESET 3 3V3 4 3V3 5V 5 5V VDD GND 6 GND GND 7 GND VIN 8 A0 CN8 Power 1 PA0 IRQ_MCU alt A1 2 PA1 IRQ_MCU alt A2 3 PA4 IRQ_MCU alt A3 4 PB0 IRQ_MCU alt A4 5 PC1 NC A5 6 PC0 NC Table 2 Interconnections between X NUCLEO LED12A1 expansion board and NUCLEO L073RZ development board right side Signal Connector Pin number NUCLEO L073RZ X NUCLEO LED12A1 D15 CN5 ...

Страница 4: ...Signal Connector Pin number NUCLEO L073RZ X NUCLEO LED12A1 D3 CN9 Digital 4 PB3 IRQ_MCU D2 3 PA10 NC D1 2 PA2 NC D0 1 PA3 NC UM2879 Connectors UM2879 Rev 2 page 4 17 ...

Страница 5: ...mbeds four LED1202 devices and is powered by the STM32 Nucleo development board The devices are driven by the microcontroller via I2C interface connected through the same I2C bus and synchronized by a clock chain UM2879 Host interface and GPIO connection UM2879 Rev 2 page 5 17 ...

Страница 6: ...s Figure 3 X NUCLEO LED12A1 expansion board component placement 1 LED1202 2 LED1202 3 LED1202 4 LED1202 5 LED panel connector 6 LED panel power supply connector 1 2 3 4 5 6 UM2879 Components UM2879 Rev 2 page 6 17 ...

Страница 7: ...eover the phase shifting function helps to reduce the inrush current Eight patterns can be stored in the internal registers for automatic sequencing without involving the MCU The pattern sequence can be also configured for duration time and number of repetitions In multi device applications a common clock domain can be shared for timing synchronization The device features thermal shutdown and open...

Страница 8: ...the MCU using the STM32 Nucleo reset button Step 5 Configure J15 jumper for internal or external LED power supply Connect pin 1 with pin 2 for external LED power supply Connect pin 2 with pin 3 for internal LED power supply For internal LED power supply the PC USB port drives the LED current Important For external LED power supply the current capability has to be provided through J13 connector Do ...

Страница 9: ... 15 17 19 21 23 25 27 29 31 33 35 37 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 U3 LED1202 IRQn 1 CS0 2 CS1 3 CS2 4 CS3 5 CS4 6 CS5 7 GND 8 CS6 9 CS7 10 VIN 15 CS11 14 CS10 13 CS9 12 CS8 11 SCL 20 SDA 19 A1 18 A0 17 VLDO 16 C10 22u 16V R2 10K CN8 CONN1x6 2 54mm 1 2 3 4 5 6 R11 0R R14 10K C1 1u 16V U1 LED1202 IRQn 1 CS0 2 CS1 3 CS2 4 CS3 5 CS4 6 CS5 7 GND 8 CS6 9 CS7 10 VIN 15 CS11 14 CS1...

Страница 10: ...Figure 5 LED panel circuit schematic UM2879 Rev 2 page 10 17 UM2879 Schematic diagrams ...

Страница 11: ... µF 16 V CAPC 1210 Capacitor Any Any 7 1 C11 180u 16V CEVSMD_6V3X8_T Capacitor Any Any 8 1 J13 WR TBL Series 2109 2 54 mm horizontal entry MORS_2P_2V54_P Header Wurth 691210910002 9 1 J15 HEADERx3 2 54 mm Header Wurth 61300311121 10 1 J18 CONN PLUG 25x2 2 54 mm right angle Header Amphenol T821150A1R100CEU 11 2 R1 R11 0 R R0603 Resistors Any Any 12 8 R2 R3 R4 R5 R6 R7 R12 R14 10K R0603 Resistors An...

Страница 12: ...4 D35 D36 D37 D38 D39 D40 D41 D42 D43 D44 D45 D46 D47 D48 PLCC White LEDs Wurth 158301227 2 16 D49 D50 D51 D52 D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 150353M1 53300 WL SFTD 353 5 RGB LEDs Wurth 150353M153300 3 1 J1 PinSocket _2x25_P2 54mm_V ertical_SM D LED connector Multicomp 2214S 50SG 85 4 1 JP1 PinHeader _1x03_P2 54mm_H orizontal Panel selector Wurth 61300311021 UM2879 Bill of materia...

Страница 13: ...Revision history Table 5 Document revision history Date Revision Changes 27 Sep 2021 1 Initial release 08 Nov 2021 2 Updated Section 2 Connectors and Section 6 Board setup UM2879 UM2879 Rev 2 page 13 17 ...

Страница 14: ...3 System requirements 2 2 Connectors 3 3 Host interface and GPIO connection 5 4 Components 6 5 LED1202 7 6 Board setup 8 7 Schematic diagrams 9 8 Bill of materials 11 Revision history 13 Contents 14 List of tables 15 List of figures 16 UM2879 Contents UM2879 Rev 2 page 14 17 ...

Страница 15: ...ard left side 3 Table 2 Interconnections between X NUCLEO LED12A1 expansion board and NUCLEO L073RZ development board right side 3 Table 3 X NUCLEO LED12A1 expansion board bill of materials 11 Table 4 LED panel bill of materials 12 Table 5 Document revision history 13 UM2879 List of tables UM2879 Rev 2 page 15 17 ...

Страница 16: ...on board 1 Figure 2 LED panel board 1 Figure 3 X NUCLEO LED12A1 expansion board component placement 6 Figure 4 X NUCLEO LED12A1 expansion board circuit schematic 9 Figure 5 LED panel circuit schematic 10 UM2879 List of figures UM2879 Rev 2 page 16 17 ...

Страница 17: ...cts 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 S...

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