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参数资料
| 型号： | PIC12CE67 |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | 8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory |
| 中文描述： | 8引脚，8位CMOS微控制器与A / D转换器和EEPROM数据存储器 |
| 文件页数： | 17/44页 |
| 文件大小： | 935K |
| 代理商： | PIC12CE67 |
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Tips ‘n Tricks
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TIP #13 Reading A Sensor With Higher
Accuracy – Charge Balancing
Method
1. Sensor charges a capacitor
2. Reference resistor discharges the capacitor
3. Modulate reference resistor to maintain
constant average charge in the capacitor
4. Use comparator to determine modulation
To improve resolution beyond 10 or 12 bits, a
technique called "Charge Balancing" can be use.
The basic concept is for the MCU to maintain a
constant voltage on a capacitor by either allowing
the charge to build through a sensor or discharge
through a reference resistor. A timer is used to
sample the capacitor voltage on regular intervals
until a predetermined number of samples are
counted. By counting the number of times the
capacitor voltage is over an arbitrary threshold, the
sensor voltage is determined. The comparator and
comparator voltage reference (CVref) on the
PIC12F629/675 are ideal for this application.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC12CE673 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory |
| PIC12CE673/JW | 功能描述:8位微控制器 -MCU 1.75KB 128 RAM 6 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC12CE673-04/JM | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter |
| PIC12CE673-04/JW | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory |
| PIC12CE673-04/P | 功能描述:8位微控制器 -MCU 1.75KB 128 RAM 6 I/O 4MHz PDIP8 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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