Renesas H8S Series Hardware Manual page 964

ADCSR—A/D Control/Status Register
Bit
Initial value
Read/Write
A/D End Flag
0 [Clearing conditions]
• When 0 is written to the ADF flag after reading ADF = 1
• When the DTC is activated by an ADI interrupt, and ADDR is read
1 [Setting conditions]
• Single mode: When A/D conversion ends
• Scan mode: When one round of conversion has been performed on all specified channels
Note: * Can only be written with 0 for flag clearing.
Rev.6.00 Oct.28.2004 page 936 of 1016
REJ09B0138-0600H
:
7 6
ADF ADIE
:
0 0
:
R/(W)* R/W
A/D Start
A/D Interrupt Enable
0 A/D conversion end interrupt (ADI) request disabled
1 A/D conversion end interrupt (ADI) request enabled
H'FF98
5 4 3
ADST SCAN CKS
0 0 0
R/W R/W R/W
Channel Select
Group
select
CH2 CH1
0
1
Group Select
0 Conversion time= 266 states (max.)
1 Conversion time= 134 states (max.)
Scan Mode
0 Single mode
1 Scan mode
0 A/D conversion stopped
1 • Single mode: A/D conversion is started. Cleared to 0
automatically when conversion ends
• Scan mode: A/D conversion is started. Conversion continues
sequentially on the selected channels until ADST is cleared to
0 by software, a reset, or transition to standby mode or
module stop mode
A/D Converter
2 1
CH2 CH1
0 0
R/W R/W
Channel
select
Single Mode Group Mode
CH0
0 0 AN0 AN0
1 AN1 AN0, AN1
1 0 AN2 AN0 to AN2
1 AN3 AN0 to AN3
0 0 AN4 AN4
1 AN5 AN4, AN5
1 0 AN6 AN4 to AN6
1 AN7 AN4 to AN7
0
CH0
0
R/W