Technical Reference Manual
002-29852 Rev. *B
1.1.2 BACKUP_RTC_RW
Description:
RTC Read Write register
Address:
0x40270008
Offset:
0x8
Retention:
Not Retained
IsDeepSleep:
No
Comment:
These bits are in vddbak domain but reset in DEEPSLEEP.
Default:
0x0
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
None [7:2]
WRITE [1:1] READ [0:0]
Bits
15
14
13
12
11
10
9
8
Name
None [15:8]
Bits
23
22
21
20
19
18
17
16
Name
None [23:16]
Bits
31
30
29
28
27
26
25
24
Name
None [31:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0
READ
RW
A
0
Read bit
When this bit is set the RTC registers will be copied to
user registers and frozen so that a coherent RTC value
can safely be read. The RTC will keep on running.
Do not set the read bit if the RTC is still busy with a
previous update (see RTC_BUSY bit) or if the Write bit
is set. Do not set the Read bit at the same time that
the Write bit is cleared.
1
WRITE
RW
A
0
Write bit
Only when this bit is set can the RTC registers be
written to (otherwise writes are ignored). This bit
cannot be set if the RTC is still busy with a previous
update (see RTC_BUSY bit) or if the Read bit is set or
getting set.
The user writes to the RTC user registers, when the
Write bit is cleared by the user then the user registers
content is copied to the actual RTC registers.
Only user RTC registers that were written to will get
copied, others will not be affected.
When the SECONDS field is updated then TICKS will
also be reset (WDT is not affected).
When the Write bit is cleared by a reset (brown
out/DeepSleep) then the RTC update will be
ignored/lost.
Do not set the Write bit if the RTC if the RTC is still
busy with a previous update (see RTC_BUSY). Do not
set the Write bit at the same time that the Read bit is
cleared.
11
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers