Real-time clock (RTC)
32.6.21
RTC alarm A binary mode register (RTC_ALRABINR)
This register can be written only when ALRAE is reset in RTC_CR register, or in initialization
mode.
Address offset: 0x70
Backup domain reset value: 0x0000 0000
System reset: not affected
31
30
29
rw
rw
rw
15
14
13
rw
rw
rw
Bits 31:0 SS[31:0]: Synchronous counter alarm value in Binary mode
32.6.22
RTC alarm B binary mode register (RTC_ALRBBINR)
This register can be written only when ALRBE is reset in RTC_CR register, or in initialization
mode.
Address offset: 0x74
Backup domain reset value: 0x0000 0000
System reset: not affected
31
30
29
rw
rw
rw
15
14
13
rw
rw
rw
Bits 31:0 SS[31:0]: Synchronous counter alarm value in Binary mode
1038/1461
28
27
26
25
rw
rw
rw
rw
12
11
10
9
rw
rw
rw
rw
This value is compared with the contents of the synchronous counter to determine if Alarm A
is to be activated. Only bits 0 up MASKSS-1 are compared.
SS[14:0] is the mirror of SS[14:0] in the RTC_ALRMASSRR, and so can also be read or
written through RTC_ALRMASSR.
28
27
26
25
rw
rw
rw
rw
12
11
10
9
rw
rw
rw
rw
This value is compared with the contents of the synchronous counter to determine if Alarm
Bis to be activated. Only bits 0 up MASKSS-1 are compared.
SS[14:0] is the mirror of SS[14:0] in the RTC_ALRMBSSRR, and so can also be read or
written through RTC_ALRMBSSR.
24
23
22
SS[31:16]
rw
rw
rw
8
7
6
SS[15:0]
rw
rw
rw
24
23
22
SS[31:16]
rw
rw
rw
8
7
6
SS[15:0]
rw
rw
rw
RM0453 Rev 1
21
20
19
18
rw
rw
rw
rw
5
4
3
2
rw
rw
rw
rw
21
20
19
18
rw
rw
rw
rw
5
4
3
2
rw
rw
rw
rw
RM0453
17
16
rw
rw
1
0
rw
rw
17
16
rw
rw
1
0
rw
rw
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