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
8.4.2 Alarms in stop-watch mode
In stop-watch mode, Alarm 1 can be configured from seconds to 999999 hours. Alarm 2
operates on minutes up to 9999 hours.
8.4.2.1 Alarm1 and alarm2 registers in stop-watch mode
Setting the time for alarm1 and alarm2: Only the information which is relevant for the
alarm condition must to be programmed. The unused parts are ignored.
Table 15. Alarm1 and alarm2 registers in stop-watch mode coded in BCD (RTCM = 1)
Bit positions labeled as - are not implemented.
Address Register name
Upper-digit (ten’s place)
Digit (unit place)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Stop-watch alarm1 registers
08h
Second_alm1
-
0 to 5
0 to 9
09h
Minute_alm1
-
0 to 5
0 to 9
09h
Hr_xx_xx_00_alm1 0 to 9
0 to 9
0Bh
Hr_xx_00_xx_alm1 0 to 9
0 to 9
0Ch
Hr_00_xx_xx_alm1 0 to 9
0 to 9
Stop-watch alarm2 registers
0Dh
Minute_alm2
-
0 to 5
0 to 9
0Eh
Hr_xx_00_alm2
0 to 9
0 to 9
0Fh
Hr_00_xx_alm2
0 to 9
0 to 9
8.4.2.2 Alarm1 and alarm2 control in stop-watch mode
Table 16. Alarm_enables- alarm enable control register (address 10h) bit
description
Bit
Symbol
Value
Description
Stop-watch alarm2
7
HR_00_XX_A2E
thousands of hours alarm2 enable
0[1]
disabled
1
enabled
6
HR_XX_00_A2E
tens of hours alarm2 enable
0[1]
disabled
1
enabled
5
MIN_A2E
minute alarm2 enable
0[1]
disabled
1
enabled
Stop-watch alarm1
4
HR_00_XX_XX_A1E
100 thousands of hours alarm1 enable
0[1]
disabled
1
enabled
3
HR_XX_00_XX_A1E
thousands of hours alarm1 enable
0[1]
disabled
1
enabled
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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