Operation Modes - Mitsubishi Electric M32R Series User Manual

Mitsubishi 32-bit risc single-chip microcomputers

Table of Contents

11.1.2 Operation Modes

The A-D converters operate in two modes: "Single mode" and "Scan mode."

(1) Single mode

In single mode, the analog input voltage in one selected channel is A-D converted once or

comparated with a given quantity. An A-D conversion interrupt request or a DMA transfer request

(for the A-D0 converter only) can be generated at completion of A-D conversion.

Note 1: A-D0 conversion start: Software trigger → Started by setting A-D0 conversion start bit to 1

A-D1 conversion start: Software trigger → Started by setting A-D1 conversion start bit to 1

Note 2: DMA transfer request: Can be generated for only the A-D0 converter.

Figure 11.1.3 Operation in Single Mode (A-D Conversion)

A-D successive approximation register

Note 1: Comparate start: Started by writing a comparison value to the successive approximation register (ADiSAR)

Note 2: DMA transfer request: Can be generated for only the A-D0 converter.

Figure 11.1.4 Operation in Single Mode (Comparate)

10-bit A-Di data register

Hardware trigger → Started by output event bus 3 or ADTRG signal input

Hardware trigger → Started by TID1 overflow/underflow or ADTRG signal input

A-Di comparate

data register

11.1 Outline of A-D Converters

A-D conversion interrupt request

or DMA transfer request (Note 2)

A-D conversion interrupt request

or DMA transfer request (Note 2)

Comparate result

ADiCMP=0 (ANn>ADiSAR)

ADiCMP=1 (ANn<ADiSAR)

A-D CONVERTERS

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