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Table of Contents
User’s Guide
LDC-HALL-HMI-EVM User's Guide
ABSTRACT
This user's guide describes the characteristics, operation, and use of the LDC-HALL-HMI-EVM (Evaluation
Module). Complete schematic diagrams, printed circuit board layouts, and bill of materials are included in this
document.
Table of Contents
1 Overview..................................................................................................................................................................................2
1.1 EVM Kit List........................................................................................................................................................................2
1.2 Main EVM Elements...........................................................................................................................................................3
1.3 Operational Modes.............................................................................................................................................................4
2 EVM GUI...................................................................................................................................................................................5
2.1 System Requirements........................................................................................................................................................5
2.2 Installation.......................................................................................................................................................................... 5
2.3 GUI Home Page.................................................................................................................................................................6
2.4 SCB Firmware....................................................................................................................................................................7
2.5 Data Plot............................................................................................................................................................................ 8
3 Schematic................................................................................................................................................................................9
4 Layout.................................................................................................................................................................................... 10
5 Bill of Materials..................................................................................................................................................................... 12
Trademarks
All trademarks are the property of their respective owners.
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Overview
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1 Overview
The LDC-HALL-HMI-EVM is the evaluation module version of the TIDA-060039 reference design. This EVM
utilizes the LDC3114 to implement inductive touch buttons and the TMAG5273 to implement contactless
magnetic dial for a human machine interface (HMI). The EVM requires the Sensor Control Board (SCB) which
connects to a host computer and controls the EVM operation. For more details on the design of this EVM, please
see the TIDA-060039 design guide.
1.1 EVM Kit List
Table 1-1 details the contents of the EVM kit. Note that the 3D printed housing and PCB are partially assembled
while other components are provided in the box not assembled. Contact the nearest Texas Instruments Product
Information Center if any components are missing.
Table 1-1. EVM Kit Contents
2
Item
Quantity
Note
LDC-HALL-HMI-EVM
1
Pre-assembled
Micro-USB Cable
1
Included in kit
3D Printed Housing Base
1
Pre-assembled
3D Printed Housing Button Surface
1
Pre-assembled
3D Printed Dial
1
Pre-assembled
3D printed Housing Top Cover
1
Included in kit
Metal Spring
1
Pre-assembled
1/4" dia. x 1/8" thick, N42 diametric magnet
1
Pre-assembled
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Overview
1.2 Main EVM Elements
The LDC-HALL-HMI-EVM is designed to showcase inductive touch buttons and magnetic Hall dial in an HMI
application. The inductive touch buttons are implemented using two LDC3114 devices while the TMAG5273 is
used for the magnetic dial.
Figure 1-1. EVM Features
The EVM requires the SCB in order to operate. The SCB can be plugged into the provided headers on the EVM
PCB and rested inside the 3D printed housing. The top portion of the housing can then be installed and bolted
shut with the provided nylon bolts and nuts.
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Overview
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1.3 Operational Modes
The LDC-HALL-HMI-EVM has different operational modes that can be changed by pushing in on the magnetic
dial in the center of the EVM. In all operational modes, the magnetic dial keeps the same functionality. The angle
of the dial is split into twelve segments and reported on the circular ring of LEDs at the top right of the board.
Pushing in on the dial signals the EVM to switch to the next operational mode. The only change between the
operational modes is how the inductive touch button data is handled.
1.3.1 Operational Mode 1
In the first operational mode, the LDC3114 baseline tracking algorithm is enabled and the digital outputs from the
two ICs are tied to the button LEDs. Each touch button will correlate to one of the LEDs. Each LDC3114 also
uses the MAXWIN feature of the baseline tracking algorithm in this mode. This feature only allows one of the
inductive touch buttons on each side of the EVM to report data to the digital outputs at a time.
1.3.2 Operational Mode 2
The second operational mode keeps the LDC3114's baseline tracking algorithm enabled, but looks at each
channels data instead of the digital output. All eight of the button channels can report data to the main MCU
through the I2C. From there, the buttons can report the maximum response through the button LEDs. With a
higher response in data, more LEDs will light up. If a force on a button surface continues to increase after all
LEDs have been turned on, the maximum force will be recorded and used as a new baseline to compare against
when illuminating the LEDs. This will reset to the default value when the operational mode changes.
1.3.3 Operational Modes 3 and 4
Operational modes three and four are very similar and turn off the baseline tracking algorithm of the LDC3114s
in order to access the raw data for each button. In operational mode three, the left set of buttons are monitored
and reported to the EVM GUI. In operational mode four, the right side buttons are accessible by the EVM GUI.
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EVM GUI
2 EVM GUI
The LDC-HALL-HMI-GUI provides access to view the raw data response for the LDC3114 devices on the board.
2.1 System Requirements
The GUI software is compatible with Windows, Mac, and Linux operating systems. The online software works
with Chrome, Firefox, and Safari browsers.
2.2 Installation
The GUI software for the LDC-HALL-HMI-EVM runs on TI's GUI Composer framework. The software is available
as a live version that runs in a browser and as a download for offline use.
Download and install the PAMB Controller drivers from https://www.ti.com/lit/zip/sbac253. This is a one-time only
setup.
Access the online version by navigating to https://dev.ti.com/gallery/search/LDC-HALL-HMI-EVM. To access the
offline GUI, mouse over the Download icon, select your operating system from the list, then follow the installation
instructions.
Figure 2-2. GUI Download Page
Figure 2-1. GUI Access Page
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EVM GUI
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2.3 GUI Home Page
For first-time use, follow the prompts for TI Cloud Agent Installation:
Figure 2-3. Initial GUI Setup
After the successful completion of the previous steps, the GUI is ready to use. When the EVM is put into one
of the compatible modes (operational mode 3 or 4), the text in the bottom-left corner of the GUI should read
Hardware Connected. If this is not the case, click the Connect button in the bottom left to manually tell the GUI to
connect or go to Options→Serial Port... and select the correct port, then click Ok.
When the EVM is not connected, the home page of the GUI will show Unknown in the top-left corner.
Figure 2-4. GUI Unknown Device
6
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EVM GUI
The home page also has links at the bottom that show the connect to the block diagram, user's guide, and
schematic for this EVM. Additionally, there is a link to our E2E forum if you have any questions about the design
or devices.
Figure 2-5. GUI Links
2.4 SCB Firmware
Firmware updates will be pushed through the GUI (requires previous driver to be installed). Downloaded offline
GUIs will only update the SCB Controller with the latest firmware available at the time of download. To check for
the latest GUI or Firmware updates, launch the latest GUI version from the web browser.
The first time a SCB is used with this EVM, it may need to be flashed with the proper firmware by going to File →
Program Device in the GUI. In some cases, the SCB will be recognized by the GUI and can update to the proper
firmware. If this is not the case, the SCB will need to be put into DFU mode by using the following steps:
If the firmware gets corrupted or must be manually reinstalled for any reason, follow these steps to reinstall the
firmware.
1. Configure the MCU on the SCB to be in Device Firmware Update (DFU) Mode. DFU mode can be entered
manually through one of the following methods while the SCB is powered on:
a. Through software:
• Send the command "bsl" on the SCB's USB Serial (COM) port.
b. Though hardware (with the EVM removed):
• Short the two test points labeled DFU (see Figure 2-6) with a pair of tweezers (or wire) while pressing
the RESET button. If this is done correctly, LED D1 on the SCB should turn OFF while LED D5 (the
power LED) is still ON. If LED D1 is still ON, the GUI firmware is still active and the device has not
entered DFU mode.
Figure 2-6. Test Points Used to Enter DFU Mode Manually
2. With the MCU in DFU mode, the GUI should recognize the SCB. After GUI recognition, go to File →
Program Device to program the SCB.
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EVM GUI
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2.5 Data Plot
Use the data plot page to view the raw data of the button presses after the EVM is in the proper mode. Click
COLLECT DATA to start the EVM data collection. When data collection starts, the EVM ignores inputs on the
magnetic dial and only processes the inductive touch buttons for the mode it is currently in (left side for mode 3
and right side for mode 4).
Figure 2-7. GUI Data Page
To stop the data collection, click STOP COLLECT. This will also resume the EVM's processing of the magnetic
dial. When data is collected, the plot can be saved or cleared using the respective button. Lastly, the number
of samples collected as well as the scale for the data can be changed for the data collection. The data plot will
not clear when changing the operational mode so it should be manually cleared when switching from mode 3 to
mode 4.
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Schematic
3 Schematic
TMAG5273
+3.3V
+3.3V
U1
C3
1uF
C4
0.1uF
3
GND(TEST)
INT
GND
1
I2C1_SCL
I2C1_SDA
16
14
Coil Connections
COM_1
LPWR
COM
INT
SCL
SDA
GND
GND
3
LPWRB_1
5
INTB_1
LED_B1
GND
R1
4.70k
R2
390
+5V
2
10
U3
I2C_SDA
B2
GND
I2C_SCL
C1
DRV_EN
A1
DRV_TRIG
B1
IN1_1
IN2_1
LED_B3
D2
Green
LED_B4
D3
Green
D4
Green
Haptic Feedback
LDC3114PWR
C9
1000pF
IN0_1
LED_B2
D1
Green
GND
IN3_1
M1
VDD
SDA
VREG
SCL
OUT+
EN
OUTIN/TRIG
GND
R3
390
R4
390
R5
390
C2
A2
J1
1
2
A3
C10
1uF
C3
C23
1uF
C24
0.1uF
Header_2x1
GND
GND
GND
GND
LED_B5
LED_B6
LED_B7
LED_B8
B3
DRV2605YZF
D5
Green
D6
Green
2
G1040003D
1
COM_1
IN0
IN1
IN2
IN3
D7
Green
D8
Green
2
9
8
7
6
1
IN0_1
IN1_1
IN2_1
IN3_1
LEDs for button
+3.3V
2
C8
50V
220pF
OUT0_1
OUT1_1
OUT2_1
OUT3_1
15
13
12
11
1
C7
50V
220pF
OUT0
OUT1
OUT2
OUT3
2
C6
50V
220pF
VDD
2
C5
50V
220pF
R43
4.70k
TMAG5273A2QDBVR
U2
4
TMAG_INT
1
GND
5
2
1
GND
I2C_SCL
I2C_SDA
2
Layout note: move C1,C2,C3,C4 close to DUT
1
6
1
C2
0.1uF
SCL
SDA
1
C1
1uF
VCC
2
4
1
+1.8V
2
LDC3114
GND
R6
390
LDC3114
R7
390
R8
390
R9
390
+1.8V
GND
GND
U4
2
10
GND
16
13
I2C_SCL
14
I2C_SDA
15
C17
1000pF
GND
1
2
3
IN1_2
IN2_2
VCC
INT
SCL
SDA
A0
A1
A2
P0
P1
P2
P3
P4
P5
P6
P7
4
5
6
7
9
10
11
12
LED_B1
LED_B2
LED_B3
LED_B4
LED_B5
LED_B6
LED_B7
LED_B8
LED Ring for angle
GND
LED_C1
TCA9534ADWR
GND
GND
IN3_2
LED_C2
D9
Green
8
LED_C3
D10
Green
LED_C4
D11
Green
LED_C5
LED_C6
1
GND
GND
INTB_2
5
R11
4.70k
LDC3114PWR
IN0_2
COM_2
INT
SCL
SDA
U5
C25
0.1uF
D12
Green
D13
Green
D14
Green
2
Coil Connections
COM
+3.3V
R10
4.70k
LPWRB_2
1
16
14
3
+3.3V
2
I2C2_SCL
I2C2_SDA
LPWR
OUT0_2
OUT1_2
OUT2_2
OUT3_2
15
13
12
11
1
1
OUT0
OUT1
OUT2
OUT3
IN0
IN1
IN2
IN3
2
COM_2
VDD
1
C16
50V
220pF
9
8
7
6
2
C15
50V
220pF
IN0_2
IN1_2
IN2_2
IN3_2
1
C14
50V
220pF
GND
2
GND
4
C13
50V
220pF
GND
1
Layout note: move C1,C2,C3,C4 close to DUT
GND
C12
0.1uF
2
C11
1uF
GND
R12
390
R13
390
R14
390
R15
390
R16
390
R17
390
+3.3V
+3.3V
6
7
+3.3V
R26
4.70k
R27
4.70k
5
LPWRB_3.3_1
LPWRB_3.3_2
8
9
1DIR
VCCB
1OE
2
R36
11
1
2
1A1
1A2
1B1
1B2
2DIR
2OE
2A1
2A2
2B1
2B2
GND
GND
+3.3V
1
GND
15
14
R37 4.70k
4.70k
16
SC1
SD1
INT1
INT
10
9
8
I2C2_SCL
I2C2_SDA
R33
1
2
3
+3.3V
SCL
SDA
A0
A1
A2
GND
D15
Green
R19
390
D17
Green
R20
390
1
1
GND
LED_C12
1
D16
Green
R18
390
8
GND
LED_C11
1
1
INT
GND
LED_C10
D18
Green
D19
Green
R21
390
D20
Green
2
15
LED_C9
2
14
I2C_SDA
+3.3V
GND
LED_C8
2
I2C_SCL
GND
R22
390
R23
390
TCA9534ADWR
4.70k
R34
GND
GND
GND
GND
GND
GND
GND
GND
4.70k
RESET
VCC
GND
R35
7
+3.3V
4.70k
LPWRB_1
LPWRB_2
13
12
3
14
A0
A1
R31
R32
4.70k 4.70k
GND
LED_C7
C28
PCA9543APWR
0.1uF
R28
4.70k
16
13
GND
SN74AVCH4T245RSV
LED_M0
U9
C27
0.1uF
GND
10
11
I2C_SCL
14
I2C_SDA
15
GND
GND
+3.3V
1
2
3
VCC
INT
SCL
SDA
A0
A1
A2
P0
P1
P2
P3
P4
P5
P6
P7
GND
4
5
6
7
9
10
11
12
LED_C7
LED_C8
LED_C9
LED_C10
LED_C11
LED_C12
LED_M0
LED_M1
LED_M1
1
+3.3V
4
SC0
SD0
INT0
I2C1_SCL
I2C1_SDA
LED_C1
LED_C2
LED_C3
LED_C4
LED_C5
LED_C6
D22
Green
D23
Green
2
VCCA
GND
GND
SCL
SDA
6
5
4
4
5
6
7
9
10
11
12
1
3
C19
0.1uF
12
13
P0
P1
P2
P3
P4
P5
P6
P7
2
R25
4.70k
U7
I2C_SCL
I2C_SDA
VCC
1
+1.8V
U6
C18
0.1uF
13
2
+3.3V
16
2
R24
4.70k
+3.3V
2
GND
U8
C26
0.1uF
Level shift from 1.8V LDC3114 to 3.3V
R41
390
R42
390
+3.3V
8
GND
GND
TCA9534ADWR
R29
390
GND
+1.8V
U10
J2B
R40
4.70k
C21
1uF
J2A
2
1
INTB_1
4
3
INTB_2
GND
6
5
LPWRB_3.3_1
DRV_EN
8
7
LPWRB_3.3_2
I2C_SCL
10
9
TMAG_INT
I2C_SDA
12
11
DRV_TRIG
C22
1uF
3
IN
OUT
NC
D21
Green
C20
1uF
4
GND
EN
+3.3V
GND
GND
2
R30
+3.3V
R38 SCL
4.70k
R39
4.70k SDA
GND
Q1B
MMDT3904-7-F
2
4.70k
TLV75518PDBVR
1
+3.3V
1.8V
5
6
1
+5V
1
3.3V
+3.3V
+3.3V
2
GND
GND
NRPN062PARN-RC
GND
GND
NRPN062PARN-RC
Figure 3-1. LDC-HALL-HMI-EVM Schematic
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Layout
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4 Layout
Figure 4-1. Top Layout
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Layout
Figure 4-2. Bottom Layout
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Bill of Materials
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5 Bill of Materials
Item Number
Designator
Quantity
1
!PCB1
1
2
C1, C3, C10, C11,
C23
5
3
C2, C4, C12, C18,
C19, C24, C25, C26,
C27, C28
4
Part Number
Manufacturer
Description
SENS104
Any
Printed Circuit Board
1uF
GRM155R70J105MA
12D
MuRata
CAP, CERM, 1 uF, 6.3 402
V, +/- 20%, X7R, 0402
10
0.1uF
C1005X7R1H104K05 TDK
0BB
CAP, CERM, 0.1 uF,
50 V, +/- 10%, X7R,
0402
402
C5, C6, C7, C8, C13,
C14, C15, C16
8
220pF
06035A221FAT2A
CAP, CERM, 220 pF,
50 V, +/- 1%, C0G/
NP0, 0603
603
5
C9, C17
2
1000pF
GRM1885C1H102FA0 MuRata
1J
CAP, CERM, 1000 pF, 603
50 V, +/- 1%, C0G/
NP0, 0603
6
C20, C21, C22
3
1uF
UMK107AB7105KA-T Taiyo Yuden
CAP, CERM, 1 uF, 50 603
V, +/- 10%, X7R, 0603
7
D1, D2, D3, D4, D5,
D6, D7, D8, D9, D10,
D11, D12, D13, D14,
D15, D16, D17, D18,
D19, D20, D21, D22,
D23
23
Green
LTST-C190GKT
Lite-On
LED, Green, SMD
1.6x0.8x0.8mm
8
FID1
1
N/A
N/A
Fiducial mark. There
is nothing to buy or
mount.
N/A
9
J2
1
NRPN062PARN-RC
Sullins Connector
Solutions
10
LBL1
1
THT-14-423-10
Brady
Thermal Transfer
Printable Labels,
0.650" W x 0.200" H 10,000 per roll
PCB Label 0.650 x
0.200 inch
11
M1
1
G1040003D
Jinlong Machinery &
Electronics
VIBRATION MOTOR
COIN LRA 170HZ
SOLDER_TAB_MOT
OR
12
Q1
1
MMDT3904-7-F
Diodes Inc.
Transistor, Dual NPN, SOT-363
40 V, 0.2 A, SOT-363
12
Value
40 V
LDC-HALL-HMI-EVM User's Guide
AVX
Package Reference
HDR12
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Bill of Materials
Item Number
Designator
Quantity
Value
Part Number
Manufacturer
Description
Package Reference
13
R1, R10, R11, R24,
R25, R26, R27, R28,
R30, R31, R32, R33,
R34, R35, R36, R37,
R38, R39, R40, R43
20
4.70k
ERJ-2RKF4701X
Panasonic
RES, 4.70 k, 1%, 0.1
W, 0402
402
14
R2, R3, R4, R5, R6,
23
R7, R8, R9, R12, R13,
R14, R15, R16, R17,
R18, R19, R20, R21,
R22, R23, R29, R41,
R42
390
CRCW0402390RJNE Vishay-Dale
D
RES, 390, 5%, 0.063
W, AEC-Q200 Grade
0, 0402
402
15
U1
1
TMAG5273A2QDBVR Texas Instruments
3-Axis Linear Hall
SOT23-6
Effect Sensor With
I2C Interface SOT23-6
16
U2, U4
2
LDC3114PWR
Texas Instruments
4-channel hybrid
inductive touch and
inductance to digital
converter
17
U3
1
DRV2605YZF
Texas Instruments
Haptic Driver for ERM YZF0009ADAD
and LRA with BuiltIn Library and Smart
Loop Architecture,
YZF0009ADAD
(DSBGA-9)
18
U5, U8, U9
3
TCA9534ADWR
Texas Instruments
I/O Expander 8 I²C
400 kHz 16-SOIC
SOIC16
19
U6
1
SN74AVCH4T245RS
VR
Texas Instruments
4-Bit Dual-Supply
Bus Transceiver
with Configurable
Voltage Translation
and 3-State
Outputs, RSV0016A
(UQFN-16)
RSV0016A
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TSSOP16
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13
Bill of Materials
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Item Number
Designator
Quantity
20
U7
21
U10
22
Part Number
Manufacturer
Description
1
PCA9543APWR
Texas Instruments
Two-Channel I2C-Bus PW0014A
Switch with Interrupt
Logic and Reset, 2.3
to 5.5 V, -40 to 85
degC, 14-pin TSSOP
(PW), Green (RoHS &
no Sb/Br)
1
TLV75518PDBVR
Texas Instruments
500-mA, Low
DBV0005A
IQ, Small Size,
Low Dropout
Regulator, DBV0005A
(SOT-23-5)
1.8V, 3.3V, GND, SCL, 0
SDA
5015
Keystone
Test Point, Miniature,
SMT
Testpoint_Keystone_
Miniature
23
FID2, FID3
0
N/A
N/A
Fiducial mark. There
is nothing to buy or
mount.
N/A
24
J1
0
TSW-102-07-G-S
Samtec
Header, 100mil, 2x1,
Gold, TH
2x1 Header
14
Value
LDC-HALL-HMI-EVM User's Guide
Package Reference
SBOU283 – JUNE 2022
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