pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 365
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pc87591l
Manufacturer Part Number
pc87591l
Description
Lpc Mobile Embedded Controllers
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87591L.pdf
(437 pages)
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Revision 1.07
Host-Controlled Modules and Host Interface
Seconds Alarm Register (SECA)
Location: Index 01
Type: R/W
Minutes Register (MIN)
Location: Index 02
Type: R/W
Minutes Alarm Register (MINA)
Location: Index 03
Type: R/W
Hours Register (HOR)
Location: Index 04
Type: R/W
Bit
Name
Reset
Bit
Name
Reset
Bit
Name
Reset
Bit
Name
Reset
7-0
7-0
7-0
7-0
Bit
Bit
Bit
Bit
Seconds Alarm Data. Values may be 00 to 59 in BCD format or 00 to 3B in binary format.
When bits 7 and 6 are both set to one (“11”), unconditional match is selected.
Minutes Data. Values may be 00 to 59 in BCD format or 00 to 3B in binary format.
Minutes Alarm Data. Values may be 00 to 59 in BCD format or 00 to 3B in binary format.
When bits 7 and 6 are both set to one (“11”), unconditional match is selected.
Hours Data. For 12-hour mode, values may be 01 to 12 (a.m.) and 81 to 92 (p.m.) in BCD format or 01 to 0C
(a.m.) and 81 to 8C (p.m.) in binary format. For 24-hour mode, values may be 00 to 23 in BCD format or 00 to
17 in binary format.
16
16
16
16
7
0
7
0
7
0
7
0
6
0
6
0
6
0
6
0
5
0
5
0
5
0
5
0
Seconds Alarm Data
Minutes Alarm Data
Description
Description
Description
Description
365
4
0
4
0
4
0
4
0
Minutes Data
Hours Data
(Continued)
3
0
3
0
3
0
3
0
2
0
2
0
2
0
2
0
1
0
1
0
1
0
1
0
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0
0
0
0
0
0
0
0
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