Hardware
19
SLAU747B – October 2017 – Revised January 2019
Copyright © 2017–2019, Texas Instruments Incorporated
MSP432P4111 SimpleLink™ microcontroller LaunchPad™ development kit
(MSP-EXP432P4111)
lists the default configuration of the internal clocks in the device.
Table 4. Default Clock Operation
Clock
Default Clock
Source
Default Clock
Frequency
Description
MCLK
DCO
3 MHz
Master clock. Sources CPU and peripherals.
HSMCLK
DCO
3 MHz
Subsystem master clock. Sources peripherals.
SMCLK
DCO
3 MHz
Low-speed subsystem master clock. Sources peripherals.
ACLK
LFXT
(or REFO if no
crystal present)
32.768 kHz
Auxiliary clock. Sources peripherals.
BCLK
LFXT
(or REFO if no
crystal present)
32.768 kHz
Low-speed backup domain clock. Sources LPM peripherals.
For more information about configuring internal clocks and using the external oscillators, see the
MSP432P4xx SimpleLink™ Microcontrollers Technical Reference Manual
.
2.8
BoosterPack Plug-in Module Pinout
The MSP-EXP432P4111 LaunchPad development kit adheres to the 40-pin LaunchPad development kit
pinout standard. A standard was created to aid compatibility between LaunchPad and BoosterPack tools
across the TI ecosystem.
The 40-pin standard is compatible with the 20-pin standard that is used by other LaunchPads like the
. This allows some subset of functionality of 40-pin BoosterPacks to be used with
20-pin LaunchPads.
While most BoosterPacks are compliant with the standard, some are not. The MSP-EXP432P4111
LaunchPad kit is compatible with all 20-pin and 40-pin BoosterPack plug-in modules that are compliant
with the standard. If the reseller or owner of the BoosterPack plug-in module does not explicitly indicate
compatibility with the MSP-EXP432P4111 LaunchPad development kit, compare the schematic of the
candidate BoosterPack plug-in module with the LaunchPad development kit to ensure compatibility. Keep
in mind that sometimes conflicts can be resolved by changing the MSP432P4111 device pin function
configuration in software. More information about compatibility can also be found at
.
Pins P3.5, P3.6, and P3.7 from the MSP432P4111 are connected to both the BoosterPack plug-in module
connector and the LCD. If these pins are driven with a digital voltage from either the MSP432P4111 or a
BoosterPack plug-in module, the LCD segments connected to these pins may be damaged.
shows the 40-pin pinout of the MSP-EXP432P4111 LaunchPad development kit.
Software configuration of the pin functions plays a role in compatibility. The MSP-EXP432P4111
LaunchPad development kit side of the dashed line in
shows all of the functions for which the
MSP432P4111 device pins can be configured. This can also be seen in the MSP432P4111 data sheet.
The BoosterPack plug-in module side of the dashed line shows the standard. The MSP432P4111 function
whose color matches the BoosterPack function shows the specific software-configurable function by which
the MSP-EXP432P4111 LaunchPad kit adheres to the standard.
