Evaluation Board Hardware
The CSM Evaluation Board shares many of the same core features of the PIC24F
board. In-circuit Serial Programming lines are provided via a PICkit 2 header, a Mini-B
USB adaptor is available for power, and the PICkit Serial Analyzer may be used to
communicate to the mTouch GUI via I 2 C (transferred through USB by the PICkit Serial
Analyzer). For this board, do not use both USB and a PICkit to power the board. The
USB has a 3.3V regulator afterwards to regulate the USB power, and the PICkit tools
have their own regulator straight to the device V DD . So, choose one or the other.
4.2
BOARD COMPONENTS
Figure 4-3 identifies the key hardware components for the evaluation board. There is
one motherboard and 4 plug-in boards. The 4 plug-in boards are identified as direct
keys, matrix keys, 2-channel slider and 4-channel slider (see also Figure 4-4).
FIGURE 4-3:
CAP TOUCH – CTMU EVALUATION BOARD COMPONENT LAYOUT (TOP SIDE)
3
J1
C13
2
R16
R15
R14
R13
R12
R11
R10
5
4
C7
U1
Y1
R9
R8
R7
1
RF0
RF1
RF3
RF4 C18
R6
R5
R4
R3
R2
R1
0
1
2 3
4
5
6
7
8
9
10 11
12 13
14 15
6
7
External Interface Components
? 2009 Microchip Technology Inc.
DS41385A-page 25
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