M16C29 Datasheet, PDF (273/499 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/Tiny SERIES

M16C/29 Group
15. A/D Converter
•Example when selecting AN0 to AN3 to A/D sweep pins (SCAN1 to SCAN0 = 012)
•Example 1: When ADTRG pin falling edge is generated during AN0 pin conversion
ADTRG pin input
AN0
AN1
AN2
AN3
A/D pin input
voltage sampling
A/D pin conversion
ADST flag
1
0
ADERR0 flag 1
0
ADERR1 flag 1
0
ADTCSF flag 1
0
ADSTT0 flag
1
0
ADSTT1 flag
1
0
ADSTRT0 flag 1
0
ADSTRT1 flag 1
0
IR bit in the ADIC 1
register
0
Do not set to 1 by program
Set to 0 by program
Set to 0 by interrupt request acknowledgement or a program
•Example 2: When ADTRG pin falling edge is generated again after AN0 pin conversion
ADTRG pin input
AN0
AN1
AN2
AN3
ADST flag
1
0
ADERR0 flag 1
0
ADERR1 flag 1
0
ADTCSF flag 1
0
ADSTT0 flag
1
0
ADSTT1 flag
1
0
ADSTRT0 flag 1
0
ADSTRT1 flag 1
0
IR bit in the ADIC ₁
register
0
Do not set to 1 by program
Set to 0 by program
Set to 0 by interrupt request acknowledgment or a program
ADST flag: Bit 6 in the ADCON0 register
ADERR0, ADERR1, ADTCSF, ADSTT0, ADSTT1, ADSTRT0 and ADSTRT1 flag: bits 0, 1, 3, 4, 5, 6 and 7 in the ADSTAT0 register
Figure 15.25 Each Flag Operation in ADSTAT0 Register Associated with the Operation Example
in Delayed Trigger Mode 1 (1)
Rev. 1.12 Mar.30, 2007 ^{page 249} of 458
REJ09B0101-0112