H8SSLASH2224 datasheet(783/1071 Pages) RENESAS

Il numero della parte	H8S/2224

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	1071 Pages

Scroll/Zoom	100%

Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

Logo

783 / 1071 page

Section 17 A/D Converter

Rev. 5.00 Aug 08, 2006 page 697 of 982

REJ09B0054-0500

17.5

Operation

The A/D converter operates by successive approximation with 10-bit resolution. It has two

operating modes; single mode and scan mode. When changing the operating mode or analog input

channel, in order to prevent incorrect operation, first clear the bit ADST to 0 in ADCSR. The

ADST bit can be set at the same time as the operating mode or analog input channel is changed.

17.5.1

Single Mode

In single mode, A/D conversion is to be performed only once on the specified single channel. The

operations are as follows.

1. A/D conversion is started when the ADST bit is set to 1, according to software, timer

conversion start trigger, or external trigger input.

2. When A/D conversion is completed, the result is transferred to the corresponding A/D data

3. On completion of conversion, the ADF bit in ADCSR is set to 1. If the ADIE bit is set to 1 at

this time, an ADI interrupt request is generated.

4. The ADST bit remains set to 1 during A/D conversion. When A/D conversion ends, the ADST

bit is automatically cleared to 0 and the A/D converter enters the wait state.

H8S/2224 Scheda tecnica(PDF) 783 Page - Renesas Technology Corp