PCF85263ATL/AX View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCF85263ATL/AX
NXP Semiconductors.
'PCF85263ATL/AX' PDF : 100 Pages View PDF
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I2C-bus
Table 14. Alarm_enables- alarm enable control register (address 10h) bit
description …continued
Bit
Symbol
Value
Description
1
MIN_A1E
minute alarm1 enable
0[1]
disabled
1
enabled
0
SEC_A1E
second alarm1 enable
0[1]
disabled
1
enabled
[1] Default value.
8.4.1.3 Alarm1 and alarm2 function in RTC mode
The registers at addresses 08h through 0Ch contain alarm1 information. When one or
more of these registers is loaded with second, minute, hour, day, or month, and its
corresponding alarm enable bit (SEC_A1E to MON_A1E) is set logic 1, then that
information is compared with the current second, minute, hour, day, and month.
The registers at addresses 0Dh through 0Fh contain alarm2 information. When one or
more of these registers is loaded with minute, hour or weekday, and its corresponding
alarm enable bit (MIN_A2E to WDAY_A2E) is set logic 1, then that information is
compared with the current minute, hour and weekday.
Alarm registers which have their alarm enable bit at logic 0 are ignored.
When the time increments to match the enabled alarms, the alarm flag in the Flags
register (Section 8.14 on page 57) is set. A1F for alarm1 and A2F for alarm2. The alarm
flag is cleared by command.
When the time increments to match the enabled alarms, an interrupt can be generated.
See Section 8.4.3 “Alarm interrupts”.
PCF85263A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4.1 — 27 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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