Datasheet

Section 19 A/D Converter
R01UH0166EJ0600 Rev. 6.00 Page 903 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
Section 19 A/D Converter
19.1 Overview
The H8S/2633 Group incorporates a successive approximation type 10-bit A/D converter that
allows up to sixteen analog input channels to be selected.
19.1.1 Features
A/D converter features are listed below.
• 10-bit resolution
• Sixteen input channels
• Settable analog conversion voltage range
⎯ Conversion of analog voltages with the reference voltage pin (Vref) as the analog reference
voltage
• High-speed conversion
⎯ Minimum conversion time:
10.64 µs per channel (at 25-MHz operation)
• Choice of single mode or scan mode
⎯ Single mode: Single-channel A/D conversion
⎯ Scan mode: Continuous A/D conversion on 1 to 4 channels
• Four data registers
⎯ Conversion results are held in a 16-bit data register for each channel
• Sample and hold function
• Three kinds of conversion start
⎯ Choice of software or timer conversion start trigger (TPU or 8-bit timer), or ADTRG pin
• A/D conversion end interrupt generation
⎯ A/D conversion end interrupt (ADI) request can be generated at the end of A/D conversion
• Module stop mode can be set
⎯ As the initial setting, A/D converter operation is halted. Register access is enabled by
exiting module stop mode.