572
Table A.9
ADCSR Bit Functions
Bit
Bit name
Value
Description
7
A/D end flag (ADF)
0
Clear conditions: (1) 0 written in ADF after reading ADF =
1; (2) DMAC started by ADI interrupt and A/D converter
register is accessed
(Initial value)
1
Set Conditions: (1) Single mode: A/D conversion ends;
(2) Scan mode: A/D conversion of all channels set has
ended
6
A/D interrupt enable
(ADF)
0
Interrupt requested by A/D conversion (ADI) disabled
(Initial value)
1
Interrupt requested by A/D conversion (ADI) enabled
5
A/D start (ADST)
0
Disable A/D conversion
(Initial value)
1
(1) Single mode: Start A/D conversion and when
conversion ends, automatically cleared to zero; (2) Scan
mode: Start A/D conversion and sequentially continue
converting the selected channels until cleared to 0 by
software, reset, or standby mode
4
Scan mode (SCAN)
0
Single mode
(Initial value)
1
Scan mode
3Clock select (CKS)
0
Conversion time = 23
6 cycles (max)
(Initial value)
1
Conversion time = 134 cycles (max)
2–0
Channel select 2–0
CH2
CH1
CH0
Single mode
Scan mode
0
0
0
AN0 (Initial value)
AN0 (Initial value)
1
AN1
AN0, AN1
1
0
AN2
AN0–AN2
1
AN3AN0–AN3
1
0
0
AN4
AN4
1
AN5
AN4, AN5
1
0
AN6
AN4–AN6
1
AN7
AN4–AN7
Содержание HD6417032
Страница 21: ......
Страница 35: ...xiv ...
Страница 85: ...50 ...
Страница 101: ...66 ...
Страница 129: ...94 ...
Страница 135: ...100 ...
Страница 343: ...308 ...
Страница 369: ...334 ...
Страница 383: ...348 ...
Страница 475: ...440 ...
Страница 525: ...490 CK RAS CAS TRp TRc TRcc tRASD1 tRASD2 tCASD3 tCASD2 TRr tCSR Figure 20 18 Self Refresh ...
Страница 578: ...543 CK RAS CAS TRp TRc TRcc tRASD1 tRASD2 tCASD3 tCASD2 TRr tCSR Figure 20 62 Self Refresh ...
Страница 689: ...654 ...