Section 18 A/D Converter
Section 18 A/D Converter
This LSI includes a successive approximation type 10-bit A/D converter that allows up to eight
analog input channels to be selected. The block diagram of the A/D converter is shown in figure
18.1.
18.1
Features
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10-bit resolution
Eight input channels
Conversion time: at least 3.5 µs per channel (at 20-MHz operation)
Two operating modes
Single mode: Single-channel A/D conversion
Scan mode: Continuous A/D conversion on 1 to 4 channels
Four data registers
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Conversion results are held in a data register for each channel
Sample-and-hold function
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Two conversion start methods
Software
External trigger signal
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Interrupt request
An A/D conversion end interrupt request (ADI) can be generated
ADCMS32A_000020020200
Rev. 3.00 Sep. 10, 2007 Page 367 of 528
REJ09B0216-0300
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