SAM7X256_14 Datasheet, PDF (72/662 Pages) ATMEL Corporation – ARM-based Flash MCU

14.4.1 Real-time Timer Mode Register
Register Name:
RTT_MR
Access Type:
Read-write
31
30
29
28
27
26
25
–
–
–
–
–
–
–
23
22
21
20
19
18
17
–
–
–
–
–
RTTRST
RTTINCIEN
15
14
13
12
11
10
9
RTPRES
7
6
5
4
3
2
1
RTPRES
• RTPRES: Real-time Timer Prescaler Value
Defines the number of SLCK periods required to increment the real-time timer. RTPRES is defined as follows:
RTPRES = 0: The Prescaler Period is equal to 2¹⁶
RTPRES ≠ 0: The Prescaler Period is equal to RTPRES.
• ALMIEN: Alarm Interrupt Enable
0 = The bit ALMS in RTT_SR has no effect on interrupt.
1 = The bit ALMS in RTT_SR asserts interrupt.
• RTTINCIEN: Real-time Timer Increment Interrupt Enable
0 = The bit RTTINC in RTT_SR has no effect on interrupt.
1 = The bit RTTINC in RTT_SR asserts interrupt.
• RTTRST: Real-time Timer Restart
1 = Reloads and restarts the clock divider with the new programmed value. This also resets the 32-bit counter.
24
–
16
ALMIEN
8
0
SAM7X Series [DATASHEET] 72
6120K–ATARM–11-Feb-14