参数资料
| 型号： | MCP402XEV |
| 厂商： | Microchip Technology |
| 文件页数： | 21/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR MCP402X |
| 标准包装： | 1 |
| 主要目的： | 数字电位器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | MCP4021 |
| 主要属性： | 1 个单路电位器，10 千欧，64 抽头，非易失 |
| 次要属性： | 2.7 ~ 5.5 V，150 ppm/°C |
| 已供物品： | 2 板，样品，CD |
| 产品目录页面： | 677 (CN2011-ZH PDF) |
| 相关产品： | MCP4021T-503E/MCDKR-ND - IC DGTL POT 50K 1CH 8DFN MCP4021T-502E/MCDKR-ND - IC DGTL POT 5K 1CH 8DFN MCP4021T-202E/MCDKR-ND - IC DGTL POT 2.1K 1CH 8DFN MCP4021T-103E/MCDKR-ND - IC DGTL POT 10K 1CH 8DFN MCP4021T-502E/MS-ND - IC DGTL POT 5K 1CH 8MSOP MCP4021T-202E/MS-ND - IC DGTL POT 2.1K 1CH 8MSOP MCP4021T-503E/MS-ND - IC DGTL POT 50K 1CH 8MSOP MCP4021T-103E/MS-ND - IC DGTL POT 10K 1CH 8MSOP MCP4021T-103E/SN-ND - IC DGTL POT 10K 1CH 8SOIC MCP4021T-202E/SN-ND - IC DGTL POT 2.1K 1CH 8SOIC 更多... |
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页第17页第18页第19页第20页当前第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
Installation and Operation
2.4
FIRMWARE DESCRIPTION
The 000066_MCP402XEV.ASM source code was written using assembly language for
buttons every millisecond. If the button has been depressed for 40 out of 50 ms, it is
considered to be debounced and asserted. The button state is used to determine if a
new “Action State” is desired. This simple state machine then decodes the desired
action. Once the desired command has been determined, a subroutine that performs
the desired command is executed. The low-voltage commands are driven directly from
the PIC10F206 I/O, but the high-voltage commands require some additional hardware
to generate the required 8V signal.
When a high-voltage command is required, the PIC10F206’s unique OSCOUT feature
is utilized. The OSCOUT function allows the instruction clock to be driven on
GP2/OSCOUT under software control. A simple charge pump consisting of 2 – 0.01 μF
capacitors and a BAV99 dual diode is constructed as seen in Appendix
pump that produces an 8.4V signal on the MCP401X/2X’s CS pin (assuming
V DD = 5.0V). Utilizing such a charge pump requires special attention to the timing of the
CS & U/D signals.
Refer to the comments in the 00066_MCP402XEV.ASM source code for more details
? 2005 Microchip Technology Inc.
DS51546B-page 17
相关PDF资料 |
PDF描述 |
|---|---|
| MCP42XXEV | BOARD EVALUATION MCP42XX |
| MCP43XXEV | BOARD EVALUATION MCP43XX |
| MCP46XXDM-PTPLS | BOARD PICTAIL DIGI POT MCP4XXX |
| MCP46XXEV | EVAL BOARD FOR MCP46XX |
| MCP4XXXDM-DB | BOARD DAUGHTER DIGIPOT MCP4XXX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP40D17 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:7-Bit Single I2C? (with Command Code) Digital POT with Volatile Memory in SC70 |
| MCP40D17-103AE/LT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:7-Bit Single I2C? (with Command Code) Digital POT with Volatile Memory in SC70 |
| MCP40D17-103E/LT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:7-Bit Single I2C? (with Command Code) Digital POT with Volatile Memory in SC70 |
| MCP40D17-104AE/LT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:7-Bit Single I2C? (with Command Code) Digital POT with Volatile Memory in SC70 |
| MCP40D17-104E/LT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:7-Bit Single I2C? (with Command Code) Digital POT with Volatile Memory in SC70 |
发布紧急采购，3分钟左右您将得到回复。