参数资料
| 型号： | MXSIGDM |
| 厂商： | Microchip Technology |
| 文件页数： | 17/54页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO PICTAIL MIXED SIGNAL |
| 标准包装： | 1 |
| 系列： | PICtail™ |
| 主要目的： | 用于 MCU 的混合信号：模数转换器，数模转换器， |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | TX132x，MCP330x，320x，494x，3221，3201，1525，1541 |
| 主要属性： | 3 个模数转换器，3 个数模转换器，2 个电压基准，5V 低压降 |
| 次要属性： | DIP 开关，2 个 LED，PIC16F767 |
| 已供物品： | 板 |
| 产品目录页面： | 683 (CN2011-ZH PDF) |
| 相关产品： | MCP3221A5T-E/OTDKR-ND - IC ADC 12BIT 2.7V 1CH LP SOT23-5 MCP3221A5T-E/OTCT-ND - IC ADC 12BIT 2.7V 1CH LP SOT23-5 MCP3221A5T-I/OTDKR-ND - IC ADC 12BIT 2.7V 1CH LP SOT23-5 MCP3221A5T-E/OTTR-ND - IC ADC 12BIT 2.7V 1CH LP SOT23-5 MCP3221A5T-I/OTCT-ND - IC ADC 12BIT 2.7V 1CH LP SOT23-5 MCP3221A5T-I/OTTR-ND - IC ADC 12BIT 2.7V 1CH LP SOT23-5 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页
Installation and Operation
2.3.2
The Embedded System Firmware
The Mixed Signal PICtail? Demo Board firmware utilizes PICmicro ? microcontroller
assembly language, Microchip MPASM? assembler and MPLINK? linker to build
the.HEX machine file. MixedSignal_v100.asm , DAC_dtmf.asm , p16F767.inc
and MCP492X_16f767i.lkr files are needed in your project to build the
MixedSignalPICtail.hex .
MixedSignal_v100.asm contains the main program and most of the subroutines.
After initialization of critical PICmicro microcontroller peripherals (including the internal
oscillator to 8 Mhz), the main loop polls the four DIP switches to determine the selected
mode of operation. The DIP switches create a 4-bit binary number from 0 to 15. If a
change of mode is detected for 100 ms during 500 ms of scanning, a new mode is
selected and the LEDs are alternately flashed for two seconds. Most of the modes will
time-out and re-scan the DIP switches periodically.
Refer to Appendix C. “MixedSignal_V100.asm Description” for the commented
source code further describing each mode.
Modes 0XXX primarily utilize the MCP492X DAC modes:
1. Mode0000: Use the DTMF generation subroutine (located in DAC_dtmf.asm )
to dial a phone number stored in memory. Analyze output on V OUTB or V OUTD ’s
SMA connector. See Appendix F. “DTMF Scope Captures” for resulting
waveform frequency analysis.
2. Mode0001: Send 000h and FFFh commands to generate a 100 Hz R-R output
on the MCP492X. Probe V OUTA and V OUTB to see the resulting waveforms.
3. Mode0010: Send 400h and BFFh commands to generate a 100 Hz output on the
MCP492X. Probe V OUTA and V OUTB to see the resulting waveforms.
4. Mode0011: DACA = SHDN, DACB = SHDN, PIC = SLEEP. This mode demon-
strates the low-power nature of the DAC, the PICmicro microcontroller, the op
amp and the LDO. A power cycle is required after the mode switch is changed to
exit this mode.
5. Mode0100: DACB and DACA = 800h and Read w/PIC16F767 10b ADC, “broad-
cast on USART”. This mode is useful for evaluating the PICmicro microcontroller ’s
ADC. A IN_B can be injected with an alternative signal and the result can be
analyzed through the 19200 baud async, 9-bit transmission. Microchip’s Data
View analysis tool, along with the MCP3551 USB evaluation board, provide a
“canned” analysis solution.
6. Mode0101: DACB = 801h, DACA = 800h and Read w/MCP3302 13b Dif, “broad-
cast on USART”. This mode is useful for evaluating the MCP3302 or the
MCP3204 ADC. A IN_B can be injected with an alternative signal and the result
can be analyzed through the 19200 baud async, 9-bit transmission. Microchip’s
Data View analysis tool, along with the MCP3551 USB evaluation board, provide
a “canned” analysis solution.
7. Mode0110: DACB and DACA = 800h and Read w/MCP3551, “broadcast on
USART”. This mode is useful for evaluating the MCP3551 ADC or the MCP1541
V REF . A IN_B can be injected with an alternative signal and the result can be
analyzed through the 19200 baud async, 9-bit transmission. Microchip’s Data
View analysis tool, along with the MCP3551 USB evaluation board, provide a
“canned” analysis solution.
8. Mode0111: Open for user to define their own routine.
? 2004 Microchip Technology Inc.
DS51523A-page 13
相关PDF资料 |
PDF描述 |
|---|---|
| N10214-6212PC | CONN RCPT MINI-D 14POS VERT |
| N10250-52G3PC | CONN RCPT MINI-D 50POS R/A |
| N10268-52B2PC | CONN MINI-D 68POS R/A RECPT |
| N102A0-52E3VC | CONN MINI-D 100POS R/A RECPT |
| N452-000 | COUPLER FIBER SC/SC DUPLEX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MXSM202 | 制造商:SIEMON 功能描述:MX-SM SURFACE MOUNT BOXES |
| MXSMBG100A | 制造商:Microsemi Corporation 功能描述:TRANSIENT VOLTAGE SUPPRESSOR - Bulk 制造商:Microsemi Corporation 功能描述:TVS DIODE 100VWM 162VC DO215AA |
| MXSMBG100AE3 | 制造商:Microsemi Corporation 功能描述:TRANSIENT VOLTAGE SUPPRESSOR - Bulk 制造商:Microsemi Corporation 功能描述:TVS DIODE 100VWM 162VC DO215AA 制造商:Microsemi Corporation 功能描述:TVS 600W UNIDIRECT DO-215AA |
| MXSMBG100CA | 制造商:Microsemi Corporation 功能描述:TRANSIENT VOLTAGE SUPPRESSOR - Bulk 制造商:Microsemi Corporation 功能描述:TVS DIODE 100VWM 162VC DO215AA 制造商:Microsemi Corporation 功能描述:TVS 600W BIDIRECT DO-215AA |
| MXSMBG100CAE3 | 制造商:Microsemi Corporation 功能描述:TRANSIENT VOLTAGE SUPPRESSOR - Bulk 制造商:Microsemi Corporation 功能描述:TVS DIODE 100VWM 162VC DO215AA 制造商:Microsemi Corporation 功能描述:TVS 600W BIDIRECT DO-215AA |
发布紧急采购，3分钟左右您将得到回复。