R01UH0092EJ0110 Rev.1.10
Page 372 of 807
Jul 31, 2012
M16C/64C Group
20. Real-Time Clock
20.2.2
Real-Time Clock Minute Data Register (RTCMIN)
MN03 to MN00 (First digit of minute count bit) (b3-b0)
MN12 to MN10 (Second digit of minute count bit) (b6-b4)
Set a value between 00 and 59 by the BCD code.
When the digit increments from the RTCSEC register, 1 is added.
These bits become 00 at compare match in compare mode 2 and compare mode 3.
Write to bits MN12 to MN10 and MN03 to MN00 in the RTCMIN register when bits TSTART and TCSTF
in the RTCCR1 register are both 0 (count stopped). Read these bits when the BSY bit in the RTCSEC
is 0 (not while data is updated).
b7 b6 b5 b4
b1
b2
b3
Real-Time Clock Minute Data Register
Symbol
RTCMIN
Address
0341h
Bit Symbol
RW
Reset Value
X000 0000b
b0
MN00
MN01
MN02
MN03
RW
RW
RW
RW
Bit Name
First digit of minute count bit
Function
Count 0 to 9 every minute.
When the digit increments, 1
is added to the 2nd digit of
minute.
Setting
Range
0 to 9
MN10
MN11
MN12
RW
RW
RW
Second digit of minute count bit
When counting 0 to 5, 60
minutes are counted.
0 to 5
—
(b7)
Reserved bit
The read value is undefined.
RO
Содержание M16C Series
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