PCF2127 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCF2127' PDF : 101 Pages View PDF
NXP Semiconductors
PCF2127
Accurate RTC with integrated quartz crystal for industrial applications
8.10.1 Register Second_alarm
Table 44. Second_alarm - second alarm register (address 0Ah) bit allocation
Bits labeled as X are undefined at power-on and unchanged by subsequent resets.
Bit
7
6
5
4
3
2
1
0
Symbol
AE_S
SECOND_ALARM (0 to 59)
Reset
value
1
X
X
X
X
X
X
X
Table 45.
Bit
7
6 to 4
3 to 0
Second_alarm - second alarm register (address 0Ah) bit description
Symbol
Value
Place value Description
AE_S
0
-
second alarm is enabled
1
-
second alarm is disabled
SECOND_ALARM
0 to 5
ten’s place second alarm information coded in BCD format
0 to 9
unit place
8.10.2 Register Minute_alarm
Table 46. Minute_alarm - minute alarm register (address 0Bh) bit allocation
Bits labeled as X are undefined at power-on and unchanged by subsequent resets.
Bit
7
6
5
4
3
2
1
0
Symbol
AE_M
MINUTE_ALARM (0 to 59)
Reset
value
1
X
X
X
X
X
X
X
Table 47. Minute_alarm - minute alarm register (address 0Bh) bit description
Bits labeled as X are undefined at power-on and unchanged by subsequent resets.
Bit
Symbol
Value
Place value Description
7
AE_M
0
-
minute alarm is enabled
1
-
minute alarm is disabled
6 to 4
MINUTE_ALARM
0 to 5
ten’s place minute alarm information coded in BCD format
3 to 0
0 to 9
unit place
PCF2127
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 19 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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