Hitachi H8S/2633 Hardware Manual page 762

The H8S/2633 Series incorporates a successive approximation type 10-bit A/D converter that

allows up to sixteen analog input channels to be selected.

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

• 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:

• 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.

Section 19 A/D Converter

Continuous A/D conversion on 1 to 4 channels