3 Sensing Lines
I
2
C
SBW
14 LED Drive Lines
5 RX
Sensing Lines
3 TX Sensing Lines
UART
to HID
UART
UART
to COM
I
2
C
IRQ A
IRQ B
IRQ
3.3-V LDO
EnergyTrace
V+
5 V
V+
CAPTIVATE-PGMR
20-Pin Debug Header
BoosterPack 40-Pin
Expansion Header
UART Selection
IRQ Selection
LP3943 I
2
C LED Driver
12 Button Backlight LEDs,
2 Status LEDs
12-Button Keypad Matrix
With Guard and Proximity
Channel
Prototyping Header
V+ Selection
MSP430FR2522 MCU
7.25KB FRAM, 2KB SRAM, 8 CapTIvate I/Os
Required Tools and Hardware
www.ti.com
4
SLAU758 – January 2018
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Copyright © 2018, Texas Instruments Incorporated
BOOSTXL-CAPKEYPAD Capacitive Touch BoosterPack Plug
‑
in Module
2.3
CAPTIVATE-PGMR Hardware
The
CAPTIVATE-PGMR
is required for connecting the BOOSTXL-CAPKEYPAD to a host PC to enable
communication with the CapTIvate Design Center and programming of the onboard MCU. The
CAPTIVATE-PGMR is needed to load code examples other than the out-of-box experience example that
comes preprogammed on the BOOSTXL-CAPKEYPAD. If you already have a CapTIvate MCU
development kit (
MSP-CAPT-FR2633
), a CAPTIVATE-PGMR is included in that development kit and can
be used with the BOOSTXL-CAPKEYPAD. The CAPTIVATE-PGMR is not required to use the BOOSTXL-
CAPKEYPAD with a LaunchPad development kit to add keypad functionality, and the BOOSTXL-
CAPKEYPAD can be used out of the box with the
out-of-box preprogrammed firmware
.
2.4
Host LaunchPad Development Kit Hardware
To run the
host examples for the LaunchPad development kit
, the appropriate LaunchPad development kit
is required. See the specific host example for LaunchPad development kit to determine which kit is
needed.
3
Getting Started
To get started with the BOOSTXL-CAPKEYPAD, see the
BOOSTXL-CAPKEYPAD Getting Started
section
of the
CapTIvate Technology Guide
.
4
Hardware
The following sections describe the BOOSTXL-CAPKEYPAD hardware. For a detailed description of the
hardware, see the
BOOSTXL-CAPKEYPAD hardware description
in the
CapTIvate Technology Guide
.
4.1
Functional Block Diagram
Figure 2
shows the BOOSTXL-CAPKEYPAD functional block diagram.
Figure 2. BOOSTXL-CAPKEYPAD Block Diagram
