K60P100M100SF2RM Datasheet, PDF (1117/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Chapter 43 Real Time Clock (RTC)
43.2.7 RTC Lock Register (RTC_LR)
Address: RTC_LR is 4003_D000h base + 18h offset = 4003_D018h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
0
1
1
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
RTC_LR field descriptions
Field
31–8
Reserved
7
Reserved
6
LRL
Description
This read-only field is reserved and always has the value zero.
This read-only field is reserved and always has the value one.
Lock Register Lock
Once cleared, this bit can only be set by VBAT 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
Once cleared, this bit can only be set by VBAT POR or software reset.
4
CRL
0 Status register is locked and writes are ignored.
1 Status register is not locked and writes complete as normal.
Control Register Lock
Once cleared, this bit can only be set by VBAT 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
Once cleared, this bit can only be set by VBAT POR or software reset.
2–0
Reserved
0 Time compensation register is locked and writes are ignored.
1 Time compensation register is not locked and writes complete as normal.
This read-only field is reserved and always has the value one.
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1117