MC68HC908LJ24 Datasheet, PDF (220/464 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Real Time Clock (RTC)
$0046
$0047
$0048
$0049
$004A
$004B
$004C
$004D
$004E
Read: 0
0
Alarm Hour Register
(ALHR)
Write:
Reset: 0
0
Read: 0
0
Second Register
(SECR)
Write:
Reset: 0
0
Read: 0
0
Minute Register
(MINR)
Write:
Reset: 0
0
Read: 0
0
Hour Register
(HRR)
Write:
Reset: 0
0
Read: 0
0
Day Register
(DAYR)
Write:
Reset: 0
0
Read: 0
0
Month Register
(MTHR)
Write:
Reset: 0
0
Read:
Year Register
(YRR)
Write:
YR7
YR6
Reset: U
U
Read: 0
0
Day-Of-Week Register
(DOWR)
Write:
Reset: 0
0
Chronograph Data ^{Read: 0}
Register Write:
(CHRR) _{Reset: 0}
CHR6
0
U = Unaffected
0
0
SEC5
U
MIN5
U
0
0
0
0
0
0
YR5
U
0
AH4
U
SEC4
U
MIN4
U
HR4
U
DAY4
U
0
0
YR4
U
0
AH3
U
SEC3
U
MIN3
U
HR3
U
DAY3
U
MTH3
U
YR3
U
0
0
CHR5
0
CHR4
0
CHR3
0
0
0
= Unimplemented
Figure 12-1. RTC I/O Register Summary
AH2
AH1
AH0
U
U
U
SEC2 SEC1 SEC0
U
U
U
MIN2 MIN1 MIN0
U
U
U
HR2
HR1
HR0
U
U
U
DAY2 DAY1 DAY0
U
U
U
MTH2 MTH1 MTH0
U
U
U
YR2
YR1
YR0
U
U
U
DOW2 DOW1 DOW0
U
CHR2
U
CHR1
U
CHR0
0
0
0
R = Reserved
Data Sheet
220
MC68HC908LJ24/LK24 — Rev. 2
Real Time Clock (RTC)
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