Hardware Description
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SLCU002 – September 2016
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Copyright © 2016, Texas Instruments Incorporated
BOOSTXL-ULN2003 Dual Stepper Motor Driver BoosterPack Hardware
2.4
Connector, Switch, and LED Descriptions
2.4.1
Connectors
The signal assignment on the BoosterPack pin connectors is shown in
Figure 6
. The J1-J4 descriptions on
the BoosterPack follow the J1-J4 convention for the Launchpad ecosystem. See
ti.com/launchpad
for
further description of the 40-pin BoosterPack standard.
Only the outer two pin columns, J1 and J2 (highlighted in red below) are required for BoosterPack
operation, the inner 2 columns, J3 and J4, are provided to pass signals from any 40-pin Launchpad to
other BoosterPack boards that may require these pins. The additional headers, J0, J5, and J6 are for
interfacing with other development boards. See
Section 3.3
for details regarding connecting to other
development boards.
(1)
Pins with no name/description are not connected. Pins with the same name/description are shorted together.
(2)
*~ These pins are not required for BoosterPack operation.
(3)
* These pins are not connected out of the box. To enable control of this board through these pins, see
Section 4.3.1
.
(4)
~ This pin is connected to IN4 out of the box. This allows for channels IN1-IN4 to be driven directly using 8-
pin parallel mode. A resistor is connected to protect the line from bus contention if 3-pin mode is being used
and this pin is being used for another purpose.
Figure 6. BOOSTXL-ULN2003 2x20 Header Description
Table 1. J1 and J2 Connector Pinout Description
Direction
Pin Name
Pin Number
Pin Number
Pin Name
Direction
POWER
VDD
J1.1
J2.20
DGND
POWER
INPUT
GP2*
J1.2
J2.19
J1.3
J2.18
J1.4
J2.17
J1.5
J2.16
INPUT
GP6*
J1.6
J2.15
J1.7
J2.14
INPUT
GP8~
J1.8
J2.13
GP13
INPUT
INPUT
GP9*
J1.9
J2.12
GP12
INPUT
INPUT
GP10*
J1.10
J2.11
GP11
INPUT
