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| 型号： | DV164039 |
| 厂商： | Microchip Technology |
| 文件页数： | 39/64页 |
| 文件大小： | 0K |
| 描述： | KIT DEV PIC24FJ256DA210 |
| 产品培训模块： | Intro to PIC24FJDA Family |
| 视频文件： | PIC24FJ256DA210 Development Board Overview |
| 标准包装： | 1 |
| 系列： | dsPIC™ |
| 类型： | MCU |
| 适用于相关产品： | PIC24FJ256DA210 |
| 所含物品： | 开发板，显示板，3 个裸板，MPLAB ICD-3，线缆，电源 |
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Development Board Hardware
4.4.2.3
USB ON-THE-GO (OTG) MODE
To enable the USB OTG mode:
1. Install jumper J5.
2. Remove jumpers J6 and J7.
3. To detect the status of the regulated output voltage of the charge pump, connect
the charge pump PGOOD signal to the microcontroller (Figure 4-4, callout 3):
a) Remove jumper JP14 (disconnects CTMU_PAD2, LED D2 and switch S2).
b) Populate resistor R32 with a 0 ?? resistor (connects PGOOD signal to pin
AN21/RE9).
4. To have software control of the charge pump, connect the SHDN signal to the
microcontroller (Figure 4-4, callout 3):
a) Remove jumper JP15 (disconnects the potentiometer, switch S3,
CTMU_PAD3 and LED D3).
b) Populate resistor R45 with a 0 ? resistor.
In USB OTG mode, use J7 (Type Micro AB Female USB connector) to connect with
external USB OTG devices.
Note:
4.4.3
Enabling USB OTG mode may require the remapping of the UART’s TX
ping)” for more information.
UART (RS-232)
The development board provides one UART, with its RX and TX signals appearing on
pins RD0 and RF3 of the PIC24FJ256DA210, respectively. The signals can be
configured to appear at one of two places:
? The RS-232 external serial port (default).
? The PICtail Plus connector, as signals U1RX (pin 2) and U1TX (pin 4).
An RS-232 level shifter (U3) has been provided with all necessary hardware to support
the external serial port. The DB-9F serial connector (P1) is wired to support hardware
flow control; however, the flow control signals are not connected to the microcontroller.
The port is configured as a Data Communication Equipment (DCE) device.
Note:
The TX and RX signals are mapped to the microcontroller pins using the
Peripheral Pin Select (PPS) feature. When developing applications, make
sure that the pins are remapped properly to use the UART Receive and
UART Transmit signals. Refer to Section 10.4 “Peripheral Pin Select” of
the PIC24FJ256DA210 data sheet for a detailed discussion of PPS.
The UART’s availability is configured by jumpers JP16 and JP17. Their location is
To access the UART through the RS-232 serial port:
1. Set jumper J16 to position 1-2 (USART_TX – TX) (default).
2. Set jumper J17 to position 1-2 (USART_RX – RX) (default).
In this configuration, a host PC running the appropriate application can communicate
with the development board using the serial channel. Use a standard
(“straight-through”) serial cable connected to P1.
To access the UART through the PICtail Plus expansion port:
1. Set jumper J16 to position 2-3 (U1TX – TX).
2. Set jumper J17 to position 2-3 (U1RX – RX).
In this configuration, the U1RX and U1TX signals appear at pins 2 and 4 of the PICtail
Plus connector, respectively.
? 2010 Microchip Technology Inc.
DS51911A-page 39
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