Renesas Renasas Single-Chip Microcomputer SH7086 Manual de usuario descargar pdf (Pagina 6)

SH7080 Group

A/D Conversion in Single-cycle Scan Mode

REJ06B0699-0100/Rev.1.00 January 2008 Page 4 of 19

3. Description of Modules Used

In this sample application, A/D converter channels 0 to 3 are used for A/D conversion.

The functions of the SH7080 group A/D converter are outlined in table 2.

Table 2 A/D Converter Function Overview

Item Overview

Resolution 10 bits

Input channels

• 8 channels (2 independent A/D conversion modules on chip) for the SH7083/84/85

• 16 channels (3 independent A/D conversion modules on chip) for the SH7086

Conversion time

• 2.0 µs per channel (when Pφ = 25 MHz)

Operation mode

• Single mode: A/D conversion on one channel

• Continuous scan mode: A/D conversion repeated on up to 4 channels for the

SH7083/84/85 or up to 8 channels for the SH7086

• 1-cycle scan mode: A/D conversion repeated on up to 4 channels for the

SH7083/84/85 or up to 8 channels for the SH7086

Data register

Results of A/D conversion are stored in 16-bit data registers corresponding to the

respective input channels.

/D conversion start

method

• Operation of the A/D control register (ADCR) by software

• A/D converter start trigger from the multi-function timer pulse unit 2 (MTU2) or 2S

(MTU2S) can be selected.

• External trigger signal

Interrupt source

• A/D conversion end interrupt request (ADI)

Others

• Sample & hold functions are provided.

• Module standby mode can be set.

• DMAC/DTC can be started by an interrupt.

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Renesas Renasas Single-Chip Microcomputer SH7086 Manual de usuario Pagina 6