User Manual for ST models including: STEVAL-L9800 Evaluation Board, STEVAL-L9800, Evaluation Board, Board
STEVAL-L9800 evaluation board user manual - User manual
May 27, 2025 — The STEVAL-L9800 is a tool designed to evaluate the L9800 smart power device, designed by STMicroelectronics in advanced. BCD technology.
File Info : application/pdf, 18 Pages, 3.43MB
DocumentDocumentUM3342
User manual
STEVAL-L9800 evaluation board user manual
Introduction
The STEVAL-L9800 is a tool designed to evaluate the L9800 smart power device, designed by STMicroelectronics in advanced BCD technology. The L9800 is an 8-channel IC with eight LS drivers designed for automotive applications (LEDs and relays) and compatible with resistive, inductive, and capacitive loads. The device offers advanced diagnostic and protection functionalities such as short to GND, open load, overcurrent, and overtemperature detection. The 8 output channels can be driven by SPI or by 2 dedicated parallel inputs that can be associated to different output thanks to a programmable internal multiplexer. Limp home functionality is also featured, which allows the use of 2 selected drivers in specific fault conditions, such as SPI fault, microcontroller fault, or supply UV. Daisy chain compatibility even with 8-bit SPI is available. The device is able to ensure operation in cranking scenarios down to VBATT = 3 V and very low quiescent current in the SLEEP condition. A serial peripheral interface (SPI) is used for control and configuration of the loads and the device. Status feedback of all diagnostic functions is also provided. There are two input pins available for direct control and PWM: these are connected to two defined outputs by default, but additional or different output mapping can be controlled by SPI. Thanks to the expansion connectors, the STEVAL-L9800 allows the complete control of L9800 communication interface (SPI) and parallel input/output. The evaluation platform may also be controlled through a graphical user interface (GUI) on the AEK-MCU-C1MLIT1 hardware interface.
Figure 1. STEVAL-L9800 board
Notice:
For dedicated assistance, submit a request through our online support portal at www.st.com/support.
UM3342 - Rev 1 - May 2025 For further information, contact your local STMicroelectronics sales office.
www.st.com
UM3342
Hardware description
1
Hardware description
The STEVAL-L9800 is intended as a tool to evaluate all the functionalities of L9800. An optimized BOM has been dimensioned considering the real automotive application range.
The main board characteristics are the following:
·
Operative input voltage: 3 - 28 V (for VBATT pin)
·
Operative input voltage: 3 - 5 V (for VDDIO pin)
·
8 LS drivers up to 0.5 A each
·
Configurable inputs (using jumpers):
IN0/IN1
IDLE
NRES
DIS
·
SPI communication interface
·
70 x 55 mm 4-layer PCB
1.1
Block diagram
Figure 2. STEVAL-L9800 block diagram
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2
Board description
UM3342
Board description
2.1
Evaluation board main components and connectors
Figure 3. Evaluation board main components and connectors
2.2
Connectors
Name CN7
CN10
Table 1. Evaluation board connectors and switches
Description Expansion connector Pin 5: L9800 SPI clock Pin 6,11: GND Pin 9: L9800 VDDIO All the other pins are unconnected Expansion connector Pin 4: L9800 NRES Pin 6: L9800 SPI Chip Select Pin 9,10,20,32: GND Pin 14: L9800 IDLE Pin 19: L9800 DIS Pin 24: L9800 SPI input Pin 26: L9800 IN1 Pin 28: L9800 IN0 Pin 29: L9800 SPI output All the other pins are unconnected
11 x 2 Header 19 x 2 Header
Type
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2.3
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Board description
Name J13
J14
Main battery connector Pin 1: L9800 VBATT Pin 2: GND Output connector Pin 1: drain 0 Pin 2: drain 1 Pin 3: drain 2 Pin 4: drain 3 Pin 5: drain 4 Pin 6: drain 5 Pin 7: drain 6 Pin 8: drain 7
Description
Type 2 x Screw connector
8 x Screw connector
Jumper configurations
Table 2. Evaluation board jumper configuration
Name
Description
IN0 switch
Closed in position 1-2 IN0 = 5V J22
Closed in position 2-3 IN0 = 0V
Open IN0 driven by GUI
IN1 switch
Closed in position 1-2 IN1 = 5V J23
Closed in position 2-3 IN1 = 0V
Open IN1 pin floating
IDLE switch Closed in position 1-2 IDLE = 5V J24 Closed in position 2-3 IDLE = 0V Open IDLE driven by GUI
Output LEDs switch Closed Output LEDs active J25 Open Output LEDs inactive NB: This jumper must be left open in case of open load diagnosis
Device Vbatt jumper J26 Closed Vbatt device pin connected to main battery
Open Vbatt device pin floating
DIS switch Closed in position 1-2 DIS = 5V J36 Closed in position 2-3 DIS = 0V Open DIS pin floating
NRES switch Closed in position 1-2 NRES = 5V J37 Closed in position 2-3 NRES = 0V Open NRES pin floating
Default configuration OPEN OPEN OPEN
CLOSED CLOSED CLOSED (position 2-3) CLOSED (position 1-2)
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3
Getting started
UM3342
Getting started
3.1
Minimum setup
In order to operate the STEVAL-L9800, the following equipment is necessary:
·
VBATT power supply 3 - 28 V current capability up to 8 A
·
VDDIO power supply 3 - 5 V (only if AEK-MCU-C1MLIT1 is not used)
·
Loads: LED, relay, lamp with a rating of 12 V, 0.5 A
·
Optional: AEK-MCU-C1MLIT1 and STEVAL-L9800 GUI
For AEK-MCU-C1MLIT1 board usage, please refer to the relevant user manual.
3.2
Startup
Follow the steps below before using the board, :
Step 1. Configure the power supply to desired voltage level and limit the current to n x 1 A where n is the number of connected loads.
Step 2.
Switch power supplies on and check that VBATT LED and VDDIO LED are switched on (if the VDDIO pin is supplied by the AEK-MCU-C1MLIT1 board, the VDDIO LED will switch on when USB cable is plugged into the PC).
Step 3. Control IDLE input and SPI settings according to the L9800 datasheet.
Step 4. Check IN0 and IN1 according to your setup.
Step 5. Check that the output LEDs switch on correctly when the associated output is switched on.
3.3
Usage example
In this section, a usage example is described, according to the configuration provided in the following table.
Channel CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7
Table 3. Example configuration
Configuration Solenoid actuator Main Relay LED Resistive Load Relay Bulb lamp (unconnected) (shorted to GND)
Load IN0 SPI LED PWM generator GEN PWM generator SPI IN1 SPI SPI
Startup phase:
Step 1.
Power up the system
With the load configuration given in Table 3, if J25 (LEDs jumper) is closed, the output LED of CH7 will switch on since drain 7 is shorted to GND.
Step 2. IN0 = 0, IN1 = 0, IDLE = 0. The device is in sleep mode
Step 3. IN0 = 0, IN1 = 0, IDLE = 1. The device is in idle mode
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UM3342
Getting started
Step 4.
Step 5. Step 6. Step 7.
SPI initial configuration:
MAP_IN0: 0x9C04 (associate IN0 to CH0, frame counter = 0) MAP_IN1: 0xA081 (associate IN1 to CH5, frame counter = 1) CFG_1: 0x8802 (LED PWM generator freq = 122.5 Hz, frame counter = 0) CFG_2: 0x8C01 (GEN PWM generator freq = 122.5 Hz, no adjustment, frame counter = 1) PWM_LED_DC: 0xB000 (PWM LED duty cycle = 0%, frame counter = 0) PWM_GEN_DC: 0xAC03 (PWM GEN duty cycle = 0%, frame counter = 1) MAP_PWM: 0xA430 (CH2-CH3 driven by internal PWM generators, frame counter = 0) PWM_SEL: 0xA813 (CH2 driven by PWM LED & CH3 driven by PWM GEN, frame counter = 1) BIM: 0x9080 (activate bulb inrush mode on CH5, Frame counter = 0) CFG_1: 0x8901 (put device in active mode, frame counter = 1) STA_1:0x4402 (read Status register 1, expected results POR = 1, VDD_UV = 0, VS_UV = 0
MODE = 11: active mode, frame counter = 0)
The implemented SPI protocol provides the answer to a command frame only with the next transmission triggered by the MCU; so, for example, the expected result of this STA_1 read, will be the SDO value of the next STA_0 read.
STA_0:0x4001 (read Status register 0, expected results OUT_ON_ERR = 0, OUT_OFF_ERR = 0, frame counter = 1)
OFF diagnosis:
Before sending the next SPI command, remove jumper J25, otherwise the OUTPUT LED is seen as a load for CH6, masking the open load diagnosis.
DIAG_OFF_EN: 0xB7FE (enable OFF diagnosis on all channels to detect open load or short circuit to GND, frame counter = 0)
STA_0: 0x4001 (read Status register 0: expected result DIS = 0, NRES = 1, IDLE = 1, IN1 = 0, IN0 = 0, OUT_ON_ERR = 0, OUT_OFF_ERR = 1, frame counter = 1)
DIAG_OPL_OFF: 0x4C00 (read open load in OFF diagnostic: expected results OUT6 = 1 because unconnected, frame counter = 0)
DIAG_SHG: 0x5401 (read short to GND diagnostic: expected results OUT7 = 1 because shorted to GND, frame counter = 0)
After OFF diagnosis completion, jumpers J25 can be closed, so there will be visual feedback at channels switched on.
Switch on the loads
IN0 =1, IN1 = 1 (switch on CH0 & CH5, through J22-J23)
PWM_SPI: 0x9B48 (all SPI driven channels are switched on, frame counter = 0) PWM_GEN_DC: 0xAFFF (configure PWM GEN duty cycle at 100 %, the expected effect is CH3
fully on, frame counter = 1)
PWM_LED_DC: 0XB3FD (configure PWM LED duty cycle at 100 %, the expected effect is CH2 fully on, frame counter = 0)
ON diagnosis
STA_0: 0x4001 (read Status register 0: expected result DIS = 0, NRES = 1, IDLE = 1, IN1 = 1, IN0 = 1, OUT_ON_ERR = 1, OUT_OFF_ERR = 0, frame counter = 1)
DIAG_OVC_OVT:0x4802 (read the overcurrent and overtemperature diagnosis, expected results OUT5 = 1 since a bulb lamp has been used; refer to the L9800 datasheet for further details. Frame counter = 0)
DIAG_OVC_OVT_RLW: 0XBFFD (clear all the overcurrent and overtemperature diagnosis, expected result reading DIAG_OVC_OVT again all the diagnosis has been cleared. Frame counter = 1)
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4
Schematic diagrams
VBAT
J13
LED1
Vbat
1 2
2
C4
VBATT supply
D2
VBATT
GND SMA6T39AY
R14 4K7
10uF/50V C5 GND 100uF/50V
GND
GND
11
SMA6T14AY D3
2
GND
I/O switches
1 GND TP8
VDDIO IN0
GND
J22
1 2 3
IN0
VDDIO IN1
GND
J23
1 2 3
IN1
VDDIO IDLE
GND
J24
1 2 3
IDLE
Figure 4. STEVAL-L9800 evaluation board schematic
Device
Output connector and LEDs
100nF/50V
2
C1
J1 GND J2 J3
Vbat 1 J26
J4
2
1
J25
VBAT
4K7 R40 4K7 R41 4K7 R42 4K7 R43 4K7 R44 4K7 R45 4K7 R46 4K7 R47
24 DR0 23 GND 22 21 DR1 20 GND 19 DR2
GND
DR7 J5 DR6 J7 GND
DR5 J9 NRES J11IN1 J15
0 EXPAD 1 D_OUT7 2 D_OUT6 3 S_OUT56 4 D_OUT5 5 NRES 6 IN1
D_OUT0 S_OUT07
VBATT D_OUT1 S_OUT12 D_OUT2
U1 L9800_QFN24
DIS 18 DIS D_OUT3 17 DR3 J6 S_OUT34 16 GND J8 D_OUT4 15 DR4
SI 14 SI J10 NCS 13 NCS J12
J16
LED9
LED8
LED7
LED6
LED5
LED4
LED3
LED2
12 CLK
11 SO
VDDIO 10 VDDIO
9 IDLE
8 GND
7 IN0
VDDIO DIS
GND
J36
1 2 3
DIS
VDDIO NRES
GND
J37
1 2 3
NRES
IN0
GND
IDLE
J17
J18 J19 J20 J21
C6 100nF/20V
GND
SO
CLK
1 GND TP3
1 GND TP4
Extension Connectors
CLK
CN1 Header 7X2
12 34 56 78 9 10 11 12 13 14
JTAG N.M.
R4 1k PC14
VDDIO GND
12 34 56 78 9 10 11 12 13 14 15 16 17 18 19 20 21 22
GND
CN7 Header 11X2
Extension connector
DIS 1k SO 1k
GND
PA10 R1
PC13 R7
CN10 Header 19X2
12 34 56 78 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
PC12
GND PC2 1k
1k NRES R9 1k NCS R2
IDLE R3
GND
PC15 1k
SI
PI2 PI1
1k
R5 IN1 R6IN0
GND
1k R8
Extension connector 1
GND TP9
VDDIO LED
VDDIO
LED10 R10
VDDIO 1K
GND
10nF/50V C2 10nF/50V C3 10nF/50V C7 10nF/50V C8 10nF/50V C9 10nF/50V C10 10nF/50V C11 10nF/50V C12
J14
DR7 DR6 DR5 DR4 DR3 DR2 DR1 DR0
8 7 6 5 4 3 2 1
OUTPUT
DR7 DR6 DR5 DR4 DR3 DR2 DR1 DR0
GND
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Schematic diagrams
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5
PCB layout
Figure 5. Assembly top
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PCB layout
Figure 6. Inner 1
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Figure 7. Inner 2
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PCB layout
Figure 8. Assembly bottom
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UM3342
Bill of materials
6
Bill of materials
Table 4. STEVAL-L9800 bill of materials
Item Q.ty
Ref.
Part/value
1 2 C1,C6
100nF
2
8
C2, C3, C7, C8, C9, C10, C11, C12
10nF
3 1 C4
10uF
4 1 C5
100uF
5 2 LED1,LED10
LED2, LED3, LED4, 6 8 LED5, LED6, LED7,
LED8, LED9
R1, R2, R3, R4, R5,
7 10 R6, R7, R8, R9,
1K
R10
R14, R40, R41,
8 9 R42, R43, R44,
4K7
R45, R46, R47
9
5
J22, J23, J24, J36, J37
10 2 J25, J26 11 1 D2 12 1 D3 13 1 J13
SMA6T39AY, SMA
SMA6T14AY, SMA
14 1 J14
15 1 CN1 16 1 CN7 17 1 CN10 18 1 CN10 19 1 U1
L9800-TR, TFQFN24
Description
Manufacturer
multilayer ceramic capacitor WALSIN
multilayer ceramic capacitor WALSIN
Aluminum Electrolytic Capacitor
Aluminum Electrolytic Capacitor
Green Led
WURTH ELEKTRONIK
WURTH ELEKTRONIK
MULTICOMP PRO
Orange Led
MULTICOMP PRO
Resistor
MULTICOMP PRO
Resistor
MULTICOMP PRO
Male strip connector, straight, board to board, 2.54 HARWIN mm, 1 line, 3 connections
Male strip connector, straight, board to board, 2.54 HARWIN mm, 1 line, 2 connections
TVS diode, SMA6TY Transil, unidirectional
ST
TVS diode, SMA6TY Transil, unidirectional
ST
C.S. Clamps straight step 5 MM
ELCART
Clamps wire to board, 5 mm, 8 Vie, 28 AWG, 12 AWG, with screws
AMPHENOL ANYTEK
PCB Preci-Dip connections, 14 via, 2 line, step 2.54mm
Preci Dip
PCB Preci-Dip connections, 22 via, 2 line, step 2.54mm
Preci Dip
PCB Preci-Dip connections, 20 via, 2 line, step 2.54mm
Preci Dip
PCB Preci-Dip connections, 18 via, 2 lile, step 2.54mm
Preci Dip
8 channels low side driver ST
Order code MT21B104K500CT MT21B103K500CT 865080642006 865080653016 MP005923 MP007090
MCWR08X1001FTL
MCWR08X4701FTL
M20-9990345
M20-9990245 SMA6T39AY SMA6T14AY 05/10000-00 VI0801550000G 803-87-014-10-001101 803-87-022-10-001101 803-87-020-10-001101 803-87-018-10-001101 L9800-TR
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UM3342
Board versions
7
Board versions
Table 5. STEVAL-L9800 versions
Finished good
Schematic diagrams
STEVAL$L9800A (1)
STEVAL$L9800A schematic diagrams
1. This code identifies the STEVAL-L9800 evaluation board first version.
Bill of materials STEVAL$L9800A bill of materials
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UM3342
Regulatory compliance information
8
Regulatory compliance information
Notice for US Federal Communication Commission (FCC)
For evaluation only; not FCC approved for resale FCC NOTICE - This kit is designed to allow: (1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and (2) Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3.1.2.
Notice for Innovation, Science and Economic Development Canada (ISED)
For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules. À des fins d'évaluation uniquement. Ce kit génère, utilise et peut émettre de l'énergie radiofréquence et n'a pas été testé pour sa conformité aux limites des appareils informatiques conformément aux règles d'Industrie Canada (IC).
Notice for the European Union
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the Directive 2015/863/EU (RoHS).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091) and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (UK S.I. 2012 No. 3032).
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UM3342
Reference documents
9
Reference documents
Doc name DS14041
Table 6. Reference documents Revision 1
Title L9800 datasheet
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Revision history
Date 27-May-2025
Table 7. Document revision history
Version 1
Changes Initial release.
UM3342
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UM3342
Contents
Contents
1 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2.1 Evaluation board main components and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.3 Jumper configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3.1 Minimum setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.3 Usage example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 5 PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 6 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 7 Board versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 8 Regulatory compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 9 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
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UM3342
List of figures
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8.
STEVAL-L9800 board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 STEVAL-L9800 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Evaluation board main components and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 STEVAL-L9800 evaluation board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Assembly top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Inner 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Inner 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Assembly bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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UM3342
List of tables
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7.
Evaluation board connectors and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Evaluation board jumper configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Example configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 STEVAL-L9800 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 STEVAL-L9800 versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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UM3342
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UM3342 - Rev 1
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