R01UH0823EJ0100 Rev.1.00 Page 770 of 1823
Jul 31, 2019
RX23W Group 28. Realtime Clock (RTCe)
28.2.7 Month Counter (RMONCNT)
The RMONCNT counter is used in calendar count mode.
The RMONCNT counter is used for setting and counting the BCD-coded month value. It counts carries generated once
per month in the date counter.
A value from 01 through 12 (in BCD) can be specified; if a value outside of this range is specified, the RTC does not
operate correctly. Before writing to this register, be sure to stop the count operation through the setting of the START bit
in RCR2.
After writing to the RMONCNT counter, confirm that its value has actually changed before proceeding with further
processing. Refer to
section 28.6.5, Notes When Writing to and Reading from Registers for notes on accessing
registers.
Address(es): RTC.RMONCNT 0008 C40Ch
b7 b6 b5 b4 b3 b2 b1 b0
— — — MON10 MON1[3:0]
Value after reset:
000xxxxx
x: Undefined
Bit Symbol Bit Name Description R/W
b3 to b0 MON1[3:0] 1-Month Count Counts from 0 to 9 once per month. When a carry is generated, 1
is added to the tens place.
R/W
b4 MON10 10-Month Count Counts from 0 to 1 once per carry from the ones place. R/W
b7 to b5 — Reserved These bits are read as 0. The write value should be 0. R/W
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