ISD94100 Series Technical Reference Manual
Sep 9, 2019
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Rev1.09
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RTC Time Loading Register (RTC_TIME)
Register
Offset
R/W Description
Reset Value
RTC_TIME
0x0C
R/W RTC Time Loading Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
TENHR
HR
15
14
13
12
11
10
9
8
Reserved
TENMIN
MIN
7
6
5
4
3
2
1
0
Reserved
TENSEC
SEC
Bits
Description
[31:22]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with reset
value.
[21:20]
TENHR
10-Hour Time Digit (0~2)
When RTC runs as 12-hour time scale mode, RTC_TIME[21] (the high bit of TENHR[1:0]) means
AM/PM indication (If RTC_TIME[21] is 1, it indicates PM time message.)
[19:16]
HR
1-Hour Time Digit (0~9)
[15]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with reset
value.
[14:12]
TENMIN
10-Min Time Digit (0~5)
[11:8]
MIN
1-Min Time Digit (0~9)
[7]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with reset
value.
[6:4]
TENSEC
10-Sec Time Digit (0~5)
[3:0]
SEC
1-Sec Time Digit (0~9)
Note:
1.
RTC_TIME is a BCD digit counter and RTC will not check loaded data.
2.
The reasonable value range is listed in the parenthesis.