M16C26A Datasheet, PDF (224/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
14. A/D Converter
•Example when selecting AN0 to AN3 to analog input 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
"1"
ADST flag
"0"
"1"
ADERR0 flag
"0"
"1"
ADERR1 flag
"0"
"1"
ADTCSF flag
"0"
"1"
ADSTT0 flag
"0"
"1"
ADSTT1 flag
"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
A/D pin input
voltage sampling
A/D pin conversion
•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 14.1.8.2 Each Flag Operation in ADSTAT0 Register Associated with the Operation Example
in Delayed Trigger Mode 1 (1)
Rev. 2.00 Feb.15, 2007 ^{page 207} of 329
REJ09B0202-0200