Hitachi SH7032 - Section 14 A;D Converter; Overview; Features

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Section 14 A/D Converter
14.1 Overview
The SuperH microcomputer includes an analog-to-digital converter module which can be
programmed for input of analog signals up to eight channels. A/D conversion is performed by the
successive approximations method with 10-bit resolution.
14.1.1 Features
• 10-bit resolution
• Eight analog input channels
• User definable analog conversion voltage range
• The analog conversion voltage range can be set with the analog reference power pin (AVref) as
the analog reference voltage
• Rapid conversion time: 6.7 µs per channel (at 20 MHz)
• Single mode or scan mode (selectable)
 Single mode: One-channel A/D conversion
 Scan mode: A/D conversion repeated on one to four channels
• Four 16-bit data registers: A/D conversion results are transferred to and stored in the data
registers corresponding to channels
• Sample-and-hold circuit
• External trigger input can start A/D conversion
• ADI: A/D interrupt request
 Can be generated at end of each conversion cycle
 Can start direct memory access controller (DMAC)