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| 型号： | DM240312 |
| 厂商： | Microchip Technology |
| 文件页数： | 37/64页 |
| 文件大小： | 0K |
| 描述： | BOARD DEV PIC24FJ256DA210 |
| 产品培训模块： | Intro to PIC24FJDA Family |
| 视频文件： | PIC24FJ256DA210 Development Board Overview |
| 特色产品： | DM240312 Development Board |
| 标准包装： | 1 |
| 系列： | dsPIC™ |
| 类型： | MCU |
| 适用于相关产品： | PIC24FJ256DA210 |
| 所含物品： | 板 |
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Development Board Hardware
4.4.1.2
CTMU TOUCH SENSE INPUTS
The development board is equipped with five touch sensor inputs. These are multi-
plexed between three CTMU (Charge Time Measurement Unit) analog channels, as
shown in Table 4-4. The areas within the white border of each pad is the touch-sensitive
areas. Note that all three CTMU inputs must be enabled to use the entire pad.
TABLE 4-4:
CTMU TOUCH PAD COMBINATIONS
Touch Pad
PAD1 (RG8)
PAD2 (RE9)
PAD3 (RB5)
LEFT
RIGHT
UP
DOWN
X
X
X
X
X
X
SEL
To enable the CTMU Touch Pads:
1. To enable PAD1 (Figure 4-3, callout 1):
a) Set jumper JP13 to position PAD1–RG8
b) If installed, remove resistors R26 and R27
c) Populate resistor R25 with a 0 ? resistor (default)
2. To enable PAD2 (Figure 4-3, callout 2):
a) Set jumper JP14 to position PAD2–RE9
b) If installed, remove resistor R32
c) Populate resistor R31 with a 0 ? resistor (default)
3. To enable PAD3 (Figure 4-3, callout 3):
a) Set jumper JP15 to position PAD3–RB5
b) If installed, remove resistor R45
c) Populate resistor R41 with a 0 ? resistor (default)
X
X
Note:
4.4.1.3
CTMU signals are connected to PIC24FJ256DA210 analog pins. Make
sure that the pins are set to analog pins using their corresponding ANSx
control bits. Refer to the “ PIC24FJ256DA210 Family Data Sheet
(DS39969)” for details.
ANALOG INPUT (POTENTIOMETER)
Pin RB5 can also be configured to read potentiometer R3. This selection is enabled by
setting JP15 to position RB5–POT. No other changes are required.
4.4.1.4
LED OUTPUTS
There are four user-defined LEDs on the development board.
LEDs D1, D2 and D3 (red) are multiplexed with the CTMU pads. They are individually
enabled when their corresponding CTMU pads are enabled, as described in
LED D4 (red) is multiplexed with address line 17 of the parallel RAM and Flash mem-
ories. To use this LED, jumper JP11 must be set to position 1-2. Refer to
? 2010 Microchip Technology Inc.
DS51911A-page 37
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