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PCF2129T View Datasheet(PDF) - NXP Semiconductors.

Part Name
Description
MFG CO.
'PCF2129T' PDF : 73 Pages View PDF
NXP Semiconductors
PCF2129T
Accurate RTC with integrated quartz crystal for industrial
8.9.2 Register Minute_alarm
Table 27. Minute_alarm - minute alarm register (address 0Bh) bit description
Bit Symbol
Value Place value Description
7
AE_M
0
-
minute alarm is enabled
1[1]
-
minute alarm is disabled
6 to 4 MINUTE_ALARM
3 to 0
0 to 5
0 to 9
ten’s place minute alarm information coded in BCD
unit place format
[1] Default value.
8.9.3 Register Hour_alarm
Table 28. Hour_alarm - hour alarm register (address 0Ch) bit description
Bit Symbol
Value Place value Description
7
AE_H
0
-
hour alarm is enabled
1[1]
-
hour alarm is disabled
6
-
-
-
unused
12 hour mode[2]
5
AMPM
0
-
indicates AM
1
-
indicates PM
4
HOUR_ALARM
3 to 0
0 to 1
0 to 9
ten’s place hour alarm information coded in BCD
unit place format when in 12 hour mode
24 hour mode[2]
5 to 4 HOUR_ALARM
3 to 0
0 to 2
0 to 9
ten’s place hour alarm information coded in BCD
unit place format when in 24 hour mode
[1] Default value.
[2] Hour mode is set by the bit 12_24 in register Control_1.
8.9.4 Register Day_alarm
Table 29. Day_alarm - day alarm register (address 0Dh) bit description
Bit Symbol
Value Place value Description
7
AE_D
0
-
day alarm is enabled
1[1]
-
day alarm is disabled
6
-
-
-
unused
5 to 4 DAY_ALARM
3 to 0
0 to 3
0 to 9
ten’s place day alarm information coded in BCD
unit place format
[1] Default value.
PCF2129T
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 12 February 2013
© NXP B.V. 2013. All rights reserved.
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