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| 型号： | DM300024 |
| 厂商： | Microchip Technology |
| 文件页数： | 34/92页 |
| 文件大小： | 0K |
| 描述： | KIT DEMO DSPICDEM 1.1 |
| 标准包装： | 1 |
| 系列： | dsPICDEM™ 1.1 |
| 类型： | MCU |
| 适用于相关产品： | dsPIC30F/33F 和 PIC24H |
| 所含物品： | 板，线缆，CD，电源 |
| 产品目录页面： | 659 (CN2011-ZH PDF) |
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dsPICDEM? 1.1 Plus Development Board User’s Guide
FIGURE 3-2:
DEMO MENU OPTIONS
M ENU O PTIONS
D ATA A CQ D ISPLAY
DSP O PERATIONS
DTMF G ENERATION
– S2
– S3
– S4
From this menu you can choose one of three demonstration modes:
? Data Acquisition Display mode
? Digital Signal Processing (DSP) Operations mode
? Dual Tone Multi-Frequency (DTMF) Generation mode
3.3.1.1
DATA ACQUISITION DISPLAY MODE
The Data Acquisition Display mode demonstrates the capability of the dsPIC30F
device to convert inputs from five different analog signal sources at varying sampling
rates.
Data Acquisition mode is initiated by pressing switch SW2. Figure 3-3 shows the
resulting display on the LCD.
FIGURE 3-3:
DATA ACQUISITION DISPLAY
F = 1000 HZ
RP1 = 1.67 V
T EMP = +23 DG C
RP2 = 2.95 V
RP3 = 2.62 V
MAIN – s1
This display shows the values of the following analog signal sources:
? Potentiometers RP1-RP3
The three potentiometers available on the dsPICDEM? 1.1 Plus Development
Board, RP1, RP2 and RP3, are connected to analog input pins AN6, AN4 and
AN5, respectively, on the dsPIC30F device.
? Temperature Sensor U9:
Temperature sensor, TC1047A, is connected to the analog input pin, AN8, on the
dsPIC30F device.
? Frequency:
A fundamental sine-wave signal is generated by stepping the MCP41010 digital
potentiometer (U8) output at an 8 kHz rate. The analyzed frequency is displayed
on the LCD.
The 12-bit ADC on the dsPIC30F device is used to convert these analog input sources.
To estimate the frequency of the generated sine-wave signal, the program converts and
buffers 256 samples of the signal on pin AN3 and then performs a Fast-Fourier
Transform (FFT) on the buffer. The ADC is interrupt driven to sample and convert at a
16 kHz rate for this operation. AN3 is converted on every alternate conversion, thus
delivering an effective sampling rate of 8 kHz for the signal presented at AN3.
The program scans input pins AN4, AN5, AN6 and AN8 to sample and convert the
values of the temperature sensor and potentiometer signals and delivers one sample
of each of these signals to the LCD display.
DS70099D-page 30
? 2006 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DM300027 | 功能描述:开发板和工具包 - PIC / DSPIC 16-bit Starter Demo Board RoHS:否 制造商:Microchip Technology 产品:Starter Kits 工具用于评估:chipKIT 核心:Uno32 接口类型: 工作电源电压: |
| DM-3-000-K | 制造商:PacTec 功能描述:Case, Plastic; ABS; Black; 11.46 in.; 3.38 in.; 10.4 in.; UL 94-HB Rated 制造商:PacTec 功能描述:ENCLOSURE, DESKTOP, PLASTIC, BLACK; Enclosure Type:Desktop; Enclosure Material:Plastic; Body Color:Black; External Height - Imperial:3.38"; External Height - Metric:86mm; External Width - Imperial:10.4"; External Width - Metric:264mm;RoHS Compliant: Yes |
| DM-300-C | 制造商:Greenlee Textron Inc 功能描述:DMM 1000V RMS |
| DM-301 | 制造商:Labfacility Limited 功能描述:SENSOR PT100 THIN FILM 2X2.3MM CL B 制造商:LABFACILITY 功能描述:SENSOR, PT100, THIN FILM, 2X2.3MM, CL B 制造商:LABFACILITY 功能描述:TEMPERATURE RTD SENSOR, -70C to +500C, 100 OHM; Sensing Temperature Min:-70C; Sensing Temperature Max:+500C; Resistance:100ohm; Sensor Terminals:Through Hole; Temperature Sensing Range:-70C to +500C ;RoHS Compliant: Yes |
| DM30103J | 制造商:ELMCO 功能描述: |
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