h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 1005

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

ADCSR—A/D Control/Status Register
Bit
Initial value
Read/Write
Note: * Only 0 can be written, to clear the flag.
R/(W)
A/D end flag
ADF
0 [Clearing conditions]
1 [Setting conditions]
7
0
• When 0 is written in the to ADF flag after reading ADF = 1
• When the DTC is activated by an ADI interrupt, and ADDR is read
• Single mode: When A/D conversion ends
• Scan mode: When A/D conversion ends on all specified channels
*
A/D interrupt enable
ADIE
R/W
0 A/D conversion end interrupt (ADI) request disabled
1 A/D conversion end interrupt (ADI) request enabled
6
0
A/D start
0 A/D conversion stopped
1 • Single mode: A/D conversion is started. Cleared to 0 automatically
• Scan mode: A/D conversion is started. Conversion continues sequentially
ADST
when conversion on the specified channel ends
on the selected channels until ADST is cleared to 0 by software, a reset,
or a transition to standby mode or module stop mode
R/W
Scan mode
5
0
0 Single mode
1 Scan mode
Clock select
0 Conversion time = 266 states (max.)
1 Conversion time = 134 states (max.)
SCAN
Channel select
selection
R/W
Group
CH2
4
0
0
1
CH1 CH0
selection
Channel
0
1
0
1
Rev. 4.00 Jun 06, 2006 page 951 of 1004
CKS
R/W
H'FFE8
3
0
0
1
0
1
0
1
0
1
AN0
AN1
AN2
AN3
AN4
AN5
AN6 or CIN0–CIN7
AN7
Appendix B Internal I/O Registers
Single mode
CH2
R/W
2
0
Description
AN0
AN0, AN1
AN0, AN1, AN2
AN0, AN1, AN2, AN3
AN4
AN4, AN5
AN4, AN5, AN6 or CIN0–CIN7
AN4, AN5, AN6 or CIN0–CIN7,
AN7
CH1
R/W
1
0
REJ09B0301-0400
A/D Converter
Scan mode
CH0
R/W
0
0