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Section 15 High Speed A/D Converter (Excluding A Mask)
15.1
Overview
The high speed A/D converter has 10-bit resolution, and can select from a maximum of eight
channels of analog inputs.
15.1.1
Features
The high speed A/D converter has the following features:
•
10-bit resolution
•
Eight input channels
•
Analog conversion voltage range setting is selectable
Using the reference voltage pin (AVref) as an analog standard voltage (Vref), conversion of
analog input from 0 to Vref (only with SH7043).
•
High-speed conversion
Minimum conversion time: 2.9 µs per channel (for 28-MHz operation)
1.4 µs per channel during continuous conversion
•
Multiple conversion modes
Select mode/group mode
Single mode/scan mode
Buffered operation possible
2 channel simultaneous sampling possible
•
Three types of conversion start
Software, timer conversion start trigger (MTU), or
ADTRG
pin can be selected.
•
Eight data registers
Conversion results stored in 16-bit data registers corresponding to each channel.
•
Sample and hold function
•
A/D conversion end interrupt generation
An A/D conversion end interrupt (ADI) request can be generated on completion of A/D
conversions
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