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Hardware and Software Overview
3.5 Interfacing DRV8328AEVM and LAUNCHXL-F280049C LaunchPad
The DRV8328AEVM has 40 pins with different functions. These pins are interfaced with the LAUNCHXL-
F280049C LaunchPad development kit and are mapped appropriately to receive the functionalities of the
DRV8328 device. These 40 pins are grouped into 4 ports in respect to the LAUNCHXL-F280049C (J1 to J4).
Table 3-5
and
Table 3-6
list the interfacing of these ports of the DRV8328AEVM headers J3 and J4.
Table 3-5. Connections for Header J3 on DRV8328AEVM (DNP in bold)
J3 Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J4 Pin Number
1
2
3
4
5
6
7
8
14
DRV8328xEVM User's Guide
DRV8328AEVM Function
AVDD (DNP)
+5 V
POT_MCU/NC_49C
GND
Not used
VSENA
Not used
VSENB
nSLEEP_DFLT
VSENC
CTAP
VSENPVDD
Not used
NC_MCU/POT_49C
nFAULT_DFLT
ISENA
Not used
Not used
Not used
VDSLVL/C_TAP
Table 3-6. Connections for Header J4 on DRV8328AEVM
DRV8328AEVM Function
INHA
GND
INLA
MCU_LED
INHB
nFAULT_DFLT
INLB
Not used
Copyright © 2021 Texas Instruments Incorporated
LAUNCHXL-F280049C Function Description
+3.3 V
+5 V
PGA1/3/5_GND
GND
GPIO13/SCIBRX
ADCINA5
GPIO40/SCIBTX
ADCINB0
NC
ADCINC2
ADCINB3/VDAC
ADCINB1
SPIACLK
ADCINB2
ADCINC4
ADCINC0
GPIO37
ADCINA9
GPIO35
ADCINA1/DACB_OUT
LAUNCHXL-F280049C Function Description
GPIO10/PWM6A
GND
GPIO11/PWM6B
SPIASTE
GPIO8/PWM5A
NC
GPIO9/PWM5B
NC
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3.3 V LaunchPad Supply
5 V LaunchPad Supply
Not used
GND connection
Not used
Phase A Voltage Sense
Not used
Phase B Voltage Sense
nSLEEP for internal use only.
Phase C Voltage Sense
Center tap voltage sense.
PVDD Bus Voltage Sense
Not used
General Purpose pot for MCU
(R90)
nFAULT for internal use only.
LSS current sense
Not used
Not used
Not used
VDSLVL from DAC. C_TAP for
internal use only.
PWM used to switch Phase A
High-side FET
GND connection
PWM used to switch Phase A
Low-side FET
Visual feedback for LaunchPad
connection.
PWM used to switch Phase B
High-side FET
nFAULT for internal use only.
PWM used to switch Phase B
Low-side FET
Not used
SLVUCD3 – NOVEMBER 2021
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