Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
886
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
42.8.2 ADC Mode Register
Name:
ADC_MR
Address:
0xF804C004
Access:
Read-write
This register can only be written if the WPEN bit is cleared in
.
• LOWRES: Resolution
• SLEEP: Sleep Mode
• PRESCAL: Prescaler Rate Selection
ADCClock = MCK / ( (PRESCAL+1) * 2 ).
• STARTUP: Start-up Time
31
30
29
28
27
26
25
24
USEQ
–
–
–
TRACKTIM
23
22
21
20
19
18
17
16
–
DIV1
–
–
STARTUP
15
14
13
12
11
10
9
8
PRESCAL
7
6
5
4
3
2
1
0
–
–
SLEEP
LOWRES
–
–
Value
Name
Description
0
BITS_10
10-bit resolution.
1
BITS_8
8-bit resolution
Value
Name
Description
0
NORMAL
Normal Mode: The ADC Core and reference voltage circuitry are kept ON between conversions
1
SLEEP
Sleep Mode: The ADC Core and reference voltage circuitry are OFF between conversions
Value
Name
Description
0
SUT0
0 periods of ADCClock
1
SUT8
8 periods of ADCClock
2
SUT16
16 periods of ADCClock
3
SUT24
24 periods of ADCClock
4
SUT64
64 periods of ADCClock
5
SUT80
80 periods of ADCClock
6
SUT96
96 periods of ADCClock
7
SUT112
112 periods of ADCClock
8
SUT512
512 periods of ADCClock
9
SUT576
576 periods of ADCClock