Cypress FM33256B, Руководство пользователя

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FM33256B
Document Number: 001-86213 Rev. *C Page 15 of 39
Table 7. Register Description
Address Description
1Dh
Alarm – Month
D7 D6 D5 D4 D3 D2 D1 D0
M 0 0 10 Month Month.3 Month.2 Month.1 Month.0
Contains the alarm value for the month and the mask bit to select or deselect the Month value.
M
Match. Setting this bit to ‘0’ causes the Month value to be used in the alarm match logic. Setting this bit to ‘1’
causes the match circuit to ignore the Month value. Battery-backed, read/write.
1Ch
Alarm – Date
D7 D6 D5 D4 D3 D2 D1 D0
M 0 10 date.1 10 date.0 Date.3 Date.2 Date.1 Date.0
Contains the alarm value for the date and the mask bit to select or deselect the Date value.
M
Match: Setting this bit to ‘0’ causes the Date value to be used in the alarm match logic. Setting this bit to ‘1’ causes
the match circuit to ignore the Date value. Battery-backed, read/write.
1Bh
Alarm – Hours
D7 D6 D5 D4 D3 D2 D1 D0
M 0 10 hours.1 10 hours.0 Hours.3 Hours.2 Hours.1 Hours.0
Contains the alarm value for the hours and the mask bit to select or deselect the Hours value.
M
Match: Setting this bit to ‘0’ causes the Hours value to be used in the alarm match logic. Setting this bit to ‘1’
causes the match circuit to ignore the Hours value. Battery-backed, read/write.
1Ah
Alarm – Minutes
D7 D6 D5 D4 D3 D2 D1 D0
M 10 min.2 10 min.1 10 min.0 Min.3 Min.2 Min.1 Min.0
Contains the alarm value for the minutes and the mask bit to select or deselect the Minutes value
M
Match: Setting this bit to ‘0’ causes the Minutes value to be used in the alarm match logic. Setting this bit to ‘1’
causes the match circuit to ignore the Minutes value. Battery-backed, read/write.
19h
Alarm – Seconds
D7 D6 D5 D4 D3 D2 D1 D0
M 10 sec.2 10 sec.1 10 sec.0 Seconds.3 Seconds.2 Seconds.1 Seconds.0
Contains the alarm value for the seconds and the mask bit to select or deselect the Seconds value.
M
Match: Setting this bit to ‘0’ causes the Seconds value to be used in the alarm match logic. Setting this bit to ‘1’
causes the match circuit to ignore the Seconds value. Battery-backed, read/write.
18h
Companion Control
D7 D6 D5 D4 D3 D2 D1 D0
SNL AL/SW F1 F0 VBC FC VTP1 VTP0
SNL
Serial Number Lock: Setting to a ‘1’ makes registers 10h to 17h and SNL read-only. SNL cannot be cleared once
set to ‘1’. Nonvolatile, read/write.
AL/SW
Alarm/Square Wave Select: When set to ‘1’, the alarm match drives the ACS pin as well as the AF flag. When set
to ‘0’, the selected Square Wave Freq will be driven on the ACS pin, and an alarm match only sets the AF flag.
Nonvolatile, read/write.