H8SSLASH2218 datasheet(591/750 Pages) RENESAS

591 / 750 page

Section 15 A/D Converter

Rev.6.00 Jun. 03, 2008 Page 543 of 698

REJ09B0074-0600

15.5.2

Scan Mode

In scan mode, A/D conversion is to be performed sequentially on the specified channels (four

channels maximum). The operations are as follows.

1. When the ADST bit is set to 1 by software, TPU or external trigger input, A/D conversion

starts on the first channel in the group (AN0 when CH3 and CH2 = 00, AN4 when CH3 and

CH2 = 01, or AN8 when CH3 and CH2 = 10).

2. When A/D conversion for each channel is completed, the result is sequentially transferred to

the A/D data register corresponding to each channel.

3. When conversion of all the selected channels is completed, the ADF flag is set to 1. If the

ADIE bit is set to 1 at this time, an ADI interrupt is requested after A/D conversion ends.

Conversion of the first channel in the group starts again.

4. Steps 2 to 3 are repeated as long as the ADST bit remains set to 1. When the ADST bit is

cleared to 0, A/D conversion stops.

ADST

ADF

ADDRA

ADDRB

ADDRC

ADDRD

State of

channel 0 (AN0)

State of

channel 1 (AN1)

State of

channel 2 (AN2)

State of

channel 3 (AN3)

Set*1

Clear*1

Idle

Notes: 1. Vertical arrows ( ) indicate instructions executed by software.

2. Data currently being converted is ignored.

Clear*1

Idle

A/D conversion time

Continuous A/D conversion execution

A/D conversion 1

Idle

Transfer

A/D conversion 4

A/D conversion result 1

A/D conversion result 2

A/D conversion result 3

A/D conversion result 4

Idle

A/D conversion 5

A/D conversion 3

A/D conversion 2

Figure 15.4 A/D Conversion Timing (Scan Mode, Channels AN0 to AN2 Selected)

H8S/2218 数据表(PDF) 591 Page - Renesas Technology Corp

H8S/2218 数据表(HTML) 591 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

H8S/2218 数据表(PDF) 591 Page - Renesas Technology Corp

H8S/2218 数据表(HTML) 591 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载