参数资料
型号: PIC16F688
英文描述: Tips 'n Tricks
中文描述: 提示\u0026#39;东经诀窍
文件页数: 15/44页
文件大小: 935K
代理商: PIC16F688
Tips ‘n Tricks
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TIP #13 Reading A Sensor With Higher
Accuracy – RC Timing Method
(Cont.)
Application Notes:
AN512 Implementing Ohmmeter/Temperature
Sensor
AN611 Resistance and Capacitance Meter Using
a PIC16C622
Here is the schematic and software flow for using
a reference resistor to improve the accuracy of an
analog sensor reading. The reference resistor
(Rref) and sensor (Rsen) are assigned an I/O and
share a common capacitor. GP0 is used to
discharge the capacitor and represents the
capacitor voltage.
Through software, a timer is used to measure
when GP0 switches from a '0' to a '1' for the sensor
and reference measurements. Any difference
measured between the reference measurement
and its calibrated measurement is used to adjust
the sensor reading, resulting in a more accurate
measurement.
The comparator and comparator reference on the
PIC12F629/675 can be used instead of a port pin
for a more accurate measurement. Polypropylene
capacitors are very stable and beneficial in this
type of application.
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相关代理商/技术参数
参数描述
PIC16F688-E/ML 功能描述:8位微控制器 -MCU 7KB 256 RAM 12I/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
PIC16F688-E/P 功能描述:8位微控制器 -MCU 7KB 256 RAM 12 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
PIC16F688-E/SL 功能描述:8位微控制器 -MCU 7KB 256 RAM 12 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
PIC16F688-E/ST 功能描述:8位微控制器 -MCU 7KB 256 RAM 12 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
PIC16F688-I/ML 功能描述:8位微控制器 -MCU 7KB 256 RAM 12I/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