ST EVAL-L9177A Manual de usuario

July 2017 DocID030859 Rev 1 1/20

UM2263

User manual

EVAL-L9177A demo board hardware

Introduction

The EVAL-L9177A is an Evaluation Board designed to evaluate L9177A, a smart power

device designed by STMicroelectronics in advanced BCD technology.

L9177 is able to drive all the relevant loads used in one/two cylinder powertrain applications

(Injectors, Relay, stepper motor, tachometer, etc.), to interface with Variable Reluctance

Sensors and Hall sensors, to monitor diagnostic functionalities and to interact with the main

networks present in powertrain environment (K-Line).

All channels are protected against short circuit and over-temperature condition.

The board can be connected to the SPC563M-DISP, the Discovery+ board developed for

the SPC563M64L.

www.st.com

Contents UM2263

2/20 DocID030859 Rev 1

Contents

1 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 L9177A pinout and pin description . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Evaluation board main components and connectors . . . . . . . . . . . . . 12

5 Jumpers & connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1 Motherboard jumpers & connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.1 Default Jumper setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.2.1 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Appendix A L9177A evaluation board schematic . . . . . . . . . . . . . . . . . . . . . . . . 18

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

DocID030859 Rev 1 3/20

UM2263 List of tables

List of tables

Table 1. L9177A pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 2. Motherboard jumpers and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 3. Configuration jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

List of figures UM2263

4/20 DocID030859 Rev 1

List of figures

Figure 1. Application block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. L9177A pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4. Board front layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5. Board back layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6. Board front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 7. Motherboard main components and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 8. Microcontroller connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 9. Expansion connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10. L9177A evaluation board schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

DocID030859 Rev 1 5/20

UM2263 Hardware description

1 Hardware description

The EVAL-L9177A-SPI board provides maximum flexibility, access to all pins to simplify the

evaluation and debug phase.

1.1 Block diagram

Figure 1. Application block diagram

1.2 Microcontroller

Standard APG connector 4 x 36.

PWM output

Configuration and diagnostic via SPI

Possibility to easily connect the board to other microcontroller boards through a wire

adaptor.

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DocID030859 Rev 1 7/20

UM2263 L9177A pinout and pin description

3 L9177A pinout and pin description

Figure 3. L9177A pinout

Table 1. L9177A pin descriptions

Number Pin Name Description Class I/O Type

1 DIR Logic Input to set stepper motor direction Signal I

2 NC Not connected - -

3 VDD_TRK Tracking voltage regulator output PWR O

4 REXT External Resistor for precision current

reference Signal I

5 HS_OUT High Side Switch output PWR O

6 VRIN+ VRS positive differential input Signal I

7 VRIN- VRS negative differential input Signal I

8 VROUT VRS output Signal O

9 O2H O2 sensor Heater output PWR O

10 TACH Tachometer driver output PWR O

11 ILS_TACH Tachometer driver input Signal I

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L9177A pinout and pin description UM2263

8/20 DocID030859 Rev 1

12 GND_O2H O2 sensor heater ground PWR GND

13 NC Not connected - -

14 INO2H O2 sensor Heater input Signal I

15 RESET Reset signal to the micro Signal O

16 IN_REL2 Relay 2 parallel control input Signal I

17 IN_REL1 Relay 1 parallel control input Signal I

18 NC Not connected - -

19 NC Not connected - -

20 REL2 Relay 2 driver output PWR O

21 GND_P_1 Power ground relay 1-2 PWR GND

22 NC Not connected - -

23 REL1 Relay 1 driver output PWR O

24 NC Not connected - -

25 NC Not connected - -

26 NC Not connected - -

27 REL3 Relay 3 driver output PWR O

28 GND_P_2 Power ground for lamp PWR GND

29 NC Not connected - -

30 LAMP Lamp driver output PWR O

31 LAMP Lamp driver output PWR O

32 SO SPI data out Signal O

33 Si SPI data in Signal I

34 SCK SPI clock in Signal I

35 CS SPI Chip Select Signal I

36 KEY Key signal Signal I

37 INJ1 Injector1 driver output PWR O

38 IN1 Injector1 driver input command Signal I

39 GND_INJ1 Injector1 ground PWR GND

40 GND_INJ2 Injector2 ground PWR GND

41 IN2 Injector2 driver input command Signal I

42 INJ2 Injector2 driver output PWR O

43 KL_TX K-Line TX digital IN Signal I

44 KL_RX K-Line RX digital OUT Signal O

45 KL_Line K-Line PWR I/O

Table 1. L9177A pin descriptions (continued)

Number Pin Name Description Class I/O Type

DocID030859 Rev 1 9/20

UM2263 L9177A pinout and pin description

46 VDD 5V voltage regulator output PWR O

47 NC Not connected - -

48 PWM Logic input for stepper motor Signal I

49 VDD_SB 5V Standby voltage regulator output PWR O

50 VB Battery line to bridge 2 PWR I

51 OUTD Output bridge 2 PWR O

52 NC Not connected - -

53 OUTC Output bridge 2 PWR O

54 NC Not connected - -

55 NC Not connected - -

56 GND Analog and power ground PWR GND

57 GND Analog and power ground PWR GND

58 NC Not connected - -

59 NC Not connected - -

60 OUTB Output bridge 1 PWR O

61 OUTA Output bridge 1 PWR O

62 NC Not connected - -

63 VB_1 Battery line bridge1 PWR I

64 EN Logic input to enable stepper motor Signal I

Table 1. L9177A pin descriptions (continued)

Number Pin Name Description Class I/O Type

L9177A pinout and pin description UM2263

10/20 DocID030859 Rev 1

3.1 Board layout

Figure 4. Board front layout

Figure 5. Board back layout

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