Renesas Renasas Single-Chip Microcomputer SH7086 Manual de usuario descargar pdf (Pagina 7)

SH7080 Group

A/D Conversion in Single-cycle Scan Mode

REJ06B0699-0100/Rev.1.00 January 2008 Page 5 of 19

A block diagram of the A/D converter is shown in figure 2.

Pφ/2

Pφ/4

ADCSR

ADTSR

ADCR

ADDRn

ADDRm

ANm

ANn

ADTRG

Pφ

Pφ/3

ref

Module data bus

Internal data bus

Bus interface

10-bit D/A

converter

Sequential comparison register

Multiplexer

Sample &

hold circuit

Comparator

Control circuit

ADI interrupt signal

Conversion trigger from MTU2/MTU2S

[Legend]

: Power supply pin or reference voltage in the analog portion

ref

: Reference voltage for A/D conversion

: Ground or reference voltage in the analog portion

ANm to ANn : Analog input pins

ADCR : A/D control register

ADCSR : A/D control/status register

ADTSR : A/D trigger select register

ADDRm/n : A/D data register m/n

Note: The register number corresponds to the channel number of modules.

(m/n = 0 to 7 for the SH7083/84/85 and 0 to 15 for the SH7086)

Figure 2 A/D Converter Block Diagram (One Module)

1 2 3 4 5 6 7 8 9 10 11 12 ... 20 21

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Renesas Renasas Single-Chip Microcomputer SH7086 Manual de usuario Pagina 7

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