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TPS659104, TPS659105, TPS659106, TPS659107, TPS659108, TPS659109
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SWCS046N –MARCH 2010–REVISED APRIL 2012
Register
Value
0x36
0x54
0x90
0x05
0x09
0x08
SECONDS_REG
MINUTES_REG
HOURS_REG
DAYS_REG
MONTHS_REG
YEARS_REG
The user can round to the closest minute, by setting the ROUND_30S register bit. TC values are set to the
closest minute value at the next second. The ROUND_30S bit is automatically cleared when the rounding time is
performed.
Example:
•
•
If current time is 10H59M45S, a round operation changes time to 11H00M00S.
if current time is 10H59M29S, a round operation changes time to 10H59M00S.
GENERAL REGISTERS
Software can access the RTC_STATUS_REG and RTC_CTRL_REG registers at any time (except for the
RTC_CTRL_REG[5] bit, which must be changed only when the RTC is stopped).
COMPENSATION REGISTERS
The RTC_COMP_MSB_REG and RTC_COMP_LSB_REG registers must respect the available access period.
These registers must be updated before each compensation process. For example, software can load the
compensation value into these registers after each hour event, during an available access period.
4
6
Hours
3
Seconds
58 59
0
1
2
58 59
0
1
2
Compensation event
Hours
3
4
59
0
1
Seconds
Compensation event
swcs046-015
Figure 17. RTC Compensation Scheduling
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