RTC_B Registers
698
SLAU367P – October 2012 – Revised April 2020
Copyright © 2012–2020, Texas Instruments Incorporated
Real-Time Clock B (RTC_B)
28.3 RTC_B Registers
The RTC_B module registers are listed in
. This table also lists the retention during LPMx.5.
Registers that are not retained during LPMx.5 must be restored after exit from LPMx.5. The base address
for the RTC_B module registers can be found in the device-specific data sheet. The address offsets are
given in
NOTE:
Most registers have word or byte register access. For a generic register
ANYREG
, the suffix
"_L" (
ANYREG_L
) refers to the lower byte of the register (bits 0 through 7). The suffix "_H"
(
ANYREG_H
) refers to the upper byte of the register (bits 8 through 15).
Table 28-1. RTC_B Registers
Offset
Acronym
Register Name
Type
Access
Reset
LPMx.5 and
Backup
Operation
00h
RTCCTL01
Real-Time Clock Control 0, 1
Read/write
Word
7000h
not retained
00h
RTCCTL0
Real-Time Clock Control 0
Read/write
Byte
00h
not retained
or RTCCTL01_L
01h
RTCCTL1
Real-Time Clock Control 1
Read/write
Byte
70h
not retained
or RTCCTL01_H
02h
RTCCTL23
Real-Time Clock Control 2, 3
Read/write
Word
0000h
retained
02h
RTCCTL2
Real-Time Clock Control 2
Read/write
Byte
00h
retained
or RTCCTL23_L
03h
RTCCTL3
Real-Time Clock Control 3
Read/write
Byte
00h
retained
or RTCCTL23_H
08h
RTCPS0CTL
Real-Time Prescale Timer 0 Control
Read/write
Word
0000h
not retained
08h
RTCPS0CTLL
Read/write
Byte
00h
not retained
or RTCPS0CTL_L
09h
RTCPS0CTLH
Read/write
Byte
00h
not retained
or RTCPS0CTL_H
0Ah
RTCPS1CTL
Real-Time Prescale Timer 1 Control
Read/write
Word
0000h
not retained
0Ah
RTCPS1CTLL
Read/write
Byte
00h
not retained
or RTCPS1CTL_L
0Bh
RTCPS0CTLH
Read/write
Byte
00h
not retained
or RTCPS0CTL_H
0Ch
RTCPS
Real-Time Prescale Timer 0, 1 Counter
Read/write
Word
none
retained
0Ch
RT0PS
Real-Time Prescale Timer 0 Counter
Read/write
Byte
none
retained
or RTCPS_L
0Dh
RT1PS
Real-Time Prescale Timer 1 Counter
Read/write
Byte
none
retained
or RTCPS_H
0Eh
RTCIV
Real Time Clock Interrupt Vector
Read
Word
0000h
not retained
10h
RTCTIM0
Real-Time Clock Seconds, Minutes
Read/write
Word
undefined
retained
10h
RTCSEC
Real-Time Clock Seconds
Read/write
Byte
undefined
retained
or RTCTIM0_L
11h
RTCMIN
Real-Time Clock Minutes
Read/write
Byte
undefined
retained
or RTCTIM0_H
12h
RTCTIM1
Real-Time Clock Hour, Day of Week
Read/write
Word
undefined
retained
12h
RTCHOUR
Real-Time Clock Hour
Read/write
Byte
undefined
retained
or RTCTIM1_L
13h
RTCDOW
Real-Time Clock Day of Week
Read/write
Byte
undefined
retained
or RTCTIM1_H