Rtc Lock Register (Rtc_Lr) - NXP Semiconductors MKL27Z128VFM4 Reference Manual

32.3.7 RTC Lock Register (RTC_LR)

Address: 4003_D000h base + 18h offset = 4003_D018h
Bit 31 30 29
R
W
Reset
0 0 0
Bit 15 14 13
R
W
Reset
0 0 0
Field
31–8 This field is reserved.
Reserved This read-only field is reserved and always has the value 0.
7 This field is reserved.
Reserved This read-only field is reserved and always has the value 1.
6 Lock Register Lock
LRL
After being cleared, this bit can be set only by POR or software reset.
0 Lock Register is locked and writes are ignored.
1 Lock Register is not locked and writes complete as normal.
5 Status Register Lock
SRL
After being cleared, this bit can be set only by POR or software reset.
0 Status Register is locked and writes are ignored.
1 Status Register is not locked and writes complete as normal.
4 Control Register Lock
CRL
After being cleared, this bit can only be set by POR.
0 Control Register is locked and writes are ignored.
1 Control Register is not locked and writes complete as normal.
3 Time Compensation Lock
TCL
After being cleared, this bit can be set only by POR or software reset.
0 Time Compensation Register is locked and writes are ignored.
1 Time Compensation Register is not locked and writes complete as normal.
Reserved This field is reserved.
This read-only field is reserved and always has the value 1.
Freescale Semiconductor, Inc.
28 27 26 25
0 0 0 0
12 11 10 9
0
0 0 0 0
RTC_LR field descriptions
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
Chapter 32 Real Time Clock (RTC)
24 23 22 21
0
0 0 0 0
8 7 6 5
1
LRL SRL
0 1 1 1
Description
20 19 18 17
0 0 0 0
4 3 2 1
1
CRL TCL
1 1 1 1
16
0
0
1
521