MC68HC908LK24 MOTOROLA [Motorola, Inc], MC68HC908LK24 Datasheet - Page 242
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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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Real Time Clock (RTC)
12.10.9 Hour Register (HRR)
12.10.10 Day Register (DAYR)
Data Sheet
242
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 hour counter.
This register can be read at any time without affecting the counter count.
Writing to this register loads the value to the hour counter and the
counter continues to count from this new value.
The hour counter rolls over to 0 ($00) after reaching 23 ($17). Writing a
value other than 0 to 23 to this register has no effect.
This read/write register contains the current value of the day-of-month
counter. This register can be read at any time without affecting the
counter count. Writing to this register loads the value to the day counter
and the counter continues to count from this new value.
The day counter rolls over to 1 ($01) after reaching 28 ($1B), 29 ($1C),
30 ($1D), or 31 ($1E), depending on the value in the month and year
registers. Writing a value that is not valid for the month and year to this
register has no effect.
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
$004A
$0049
0
0
0
0
Go to: www.freescale.com
Real Time Clock (RTC)
= Unimplemented
= Unimplemented
Figure 12-16. Day Register (DAYR)
Figure 12-15. Hour Register (HRR)
0
0
0
0
0
0
0
0
DAY4
HR4
U
U
DAY3
HR3
U
U
MC68HC908LJ24/LK24 — Rev. 2
DAY2
HR2
U
U
DAY1
HR1
U
U
MOTOROLA
DAY0
HR0
U
U
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