HD6433308 Datasheet, PDF (219/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

Section 10. A/D Converter
10.1 Overview
The H8/330 chip includes an analog-to-digital converter module with eight input channels. A/D
conversion is performed by the successive approximations method with 8-bit resolution.
10.1.1 Features
The features of the on-chip A/D module are:
• Eight analog input channels
• 8-bit resolution
• Rapid conversion
Conversion time is 12.2µs per channel (minimum) with a 10MHz system clock
• External triggering can be selected
• Single and scan modes
– Single mode: A/D conversion is performed once.
– Scan mode: A/D conversion is performed in a repeated cycle on one to four channels.
• Four 8-bit data registers
These registers store A/D conversion results for up to four channels.
• A CPU interrupt (ADI) can be requested at the completion of each A/D conversion cycle.
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