MC68HC908LK24 MOTOROLA [Motorola, Inc], MC68HC908LK24 Datasheet - Page 243
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MC68HC908LK24
Manufacturer Part Number
MC68HC908LK24
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908LK24.pdf
(465 pages)
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12.10.11 Month Register (MTHR)
12.10.12 Year Register (YRR)
MC68HC908LJ24/LK24 — Rev. 2
MOTOROLA
This register is write-protected; unprotect by a write sequence to RTCWE[1:0] in RTCCOMR.
This register is write-protected; unprotect by a write sequence to RTCWE[1:0] in RTCCOMR.
Address:
Address:
This read/write register contains the current value of the month counter.
This register can be read at any time without affecting the counter count.
Writing to this register loads the value to the month counter and the
counter continues to count from this new value.
The month counter rolls over to 1 ($01) after reaching 12 ($0B). Writing
a value other than 1 to 12 to this register has no effect.
This read/write register contains the current value of the year counter.
This register can be read at any time without affecting the counter count.
Writing to this register loads the value to the year counter and the
counter continues to count from this new value.
The value stored in this register is a two’s complement representation of
the year, relative to 2000. For example, the year 2008 is represented
by 8 ($08), and the year 1979 is presented by –11 ($F5). The range of
this register is only valid for –99 to +99.
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
$004B
$004C
YR7
U
0
0
Go to: www.freescale.com
Real Time Clock (RTC)
Figure 12-17. Month Register (MTHR)
= Unimplemented
Figure 12-18. Year Register (YRR)
YR6
U
0
0
YR5
U
0
0
YR4
U
0
0
MTH3
YR3
U
U
MTH2
YR2
U
U
Real Time Clock (RTC)
MTH1
YR1
U
U
RTC Registers
Data Sheet
MTH0
YR0
U
U
243
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