Section 17 A/D Converter; Features - Hitachi H8S/2628 Hardware Manual

This LSI includes a successive approximation type 10-bit A/D converter that allows up to sixteen
analog input channels to be selected. The block diagram of the A/D converter is shown in figure
17.1.
17.1

Features

• 10-bit resolution
• Sixteen input channels
• Conversion time: 11.08 µs per channel (at 24 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
 Conversion results are held in a 16-bit data register for each channel
• Sample and hold function
• Three conversion start methods
 Software
 16-bit timer pulse unit (TPU) conversion start trigger
 External trigger signal
• Interrupt request
 An A/D conversion end interrupt request (ADI) can be generated
• Module stop mode can be set
ADCMS38A_000020020300

Section 17 A/D Converter

Rev. 1.0, 09/02, page 427 of 568