Datasheet

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 “ADC Write Protect Mode Register” on page 910.
•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
76543210
–
– 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