使用模拟到数字（A D转换）转换器

This application note is intended for PIC16C7X users with
some degree of familiarity with analog system design. The
various sections discuss the following topics:
• Commonly used A/D terminology
• How to configure and use the PIC16C71 A/D
• Various ways to generate external reference
voltage (V
REF
)
• Configuring the RA3:RA0 pins
M Using the Analog-to-Digital (A/D) Converter
AN546
Note that the digital output value is 00h for the analog
Authors: Sumit Mitra, input voltage range of 0 to 1LSb. In some converters,
Stan D’Souza, and the rst transition point is at 0.5LSb and not at 1LSb as
Russ Cooper shown in Figure 2. Either way, by knowing the transfer