MCP3202 12 Bit A/D Converter

The Cubloc has a 10 bit A/D converter. For greater resolution, meaning greater precision, you can use a chip like the MCP3202. The MCP3202 is a 12 bit A/D converter that supports the SPI protocol. Here we will show you how to implement this 12 bit A/D converter into your project.

Pin	Function	I/O Direction	Explanation
CS	Chip Select	Input	Low for data communication
CLK	Clock	Input	Clock signal
DI	Data Input	Input	Data input from MCP3202
DO	Data Output	Output	Data output from MCP3202

Const Device = CB220
Const iodi = 7
Const iodo = 6
Const ioclk = 5
Const iocs = 4
Dim i As Byte
Dim ad As Integer
Do
  Low iocs
  i = &b1011 'Channel 0
  'i = &b1111 'Channel 1
  Shiftout ioclk,iodi,0,i,4
  ad = Shiftin(ioclk,iodo,3,12)
  High iocs
  Debug Dec ad,cr
  Delay 100
Loop

The MCP3202 will convert voltage coming into CH0 and CH1 to a digital value and retain it. SPI communication can then be used to read the value from the MCP3202.

The voltage measured on the MCP320 CH0 and CH1 pins must not be greater than the voltage supplied to the MCP3202. The result of the A/D conversion is displayed in the debug window.

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MCP3202 12 Bit A/D Converter

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