SH7014 Datasheet, PDF (415/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

13. High Speed A/D Converter ⎯ SH7014 ⎯
Figure 13.5 shows an example of operation in the group-single mode when AN0 to AN2 are
selected.
ADF
ADST
Set to 1 by software
A/D
Channel 0
Conversion Sampling _conversion
standby
1
1
Conversion
standby
Automatic clear
Channel 1
Conversion standby
Sampling
A/D
conversion
2
2
Conversion standby
Channel 2 ^{Conversion standby}
Sampling
3
A/D
conversion
3
Conversion
standby
Channel 3 Conversion standby
ADDRA
Conversion result 1
ADDRB
Conversion result 2
ADDRC
Conversion result 3
ADDRD
Figure 13.5 High Speed A/D Converter Operation Example (Group-Single Mode)
13.4.4 Group-Scan Mode
Choose group-scan mode when doing repeated A/D conversions for multiple channels. This is
useful when doing continuous monitoring of the analog inputs of multiple channels.
When the ADST bit is set to 1, A/D conversion is started according to the designated conversion
start conditions. The ADST bit is held to 1 until 0 cleared by software. A/D conversion for the
selected input channels is repeated during that interval.
Rev.5.00 Sep. 27, 2007 Page 381 of 716
REJ09B0398-0500