Renesas Renasas Single-Chip Microcomputer SH7086 Manuel d'utilisateur télécharger pdf (Page 11)

SH7080 Group

A/D Conversion in Single-cycle Scan Mode

REJ06B0699-0100/Rev.1.00 January 2008 Page 9 of 19

Table 3 Processing

Software processing Hardware processing

(1)

ADCSR_0 and ADCR_0 are used to select

the mode, channel, clock, etc.



(2) Setting the ADST bit of ADCR_0 to 1. Starting A/D conversion on input channel AN0.

(3)  Sampling the analog inputs and performing conversion.

(4) 

After conversion storing converted data in registers

from ADDR0 to ADDR3.

(5)  Setting the ADF bit of ADCSR_0 to 1.

(6)  Clearing the ADST bit to 0.

(7) Clearing the ADF bit of ADCSR_0 to 0. 

(8)

Storing data from the registers ADDR0 to

ADDR3 in the RAM.



(9)

Repeating steps (2) to (8) (to perform A/D

conversion a second time).

Repeating steps (2) to (8) (to perform A/D conversion a

second time).

(10)

Repeating steps (2) to (8) (to perform A/D

conversion a third time).

Repeats steps (2) to (8) (to perform A/D conversion a

third time).

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Renesas Renasas Single-Chip Microcomputer SH7086 Manuel d'utilisateur Page 11