PCF8563PSLASHF4 datasheet(15/50 Pages) NXP

15 / 50 page

PCF8563

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Product data sheet

Rev. 10 — 3 April 2012

15 of 50

NXP Semiconductors

PCF8563

Real-time clock/calendar

8.6 Alarm registers

8.6.1 Register Minute_alarm

[1]

Default value.

8.6.2 Register Hour_alarm

[1]

Default value.

8.6.3 Register Day_alarm

[1]

Default value.

8.6.4 Register Weekday_alarm

[1]

Default value.

Table 18.

Minute_alarm - minute alarm register (address 09h) bit description

Bit

Symbol

Value

Place value Description

AE_M

minute alarm is enabled

1[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

Table 19.

Hour_alarm - hour alarm register (address 0Ah) bit description

Bit

Symbol

Value

Place value Description

AE_H

hour alarm is enabled

1[1]

hour alarm is disabled

unused

5 to 4 HOUR_ALARM

0 to 2

ten’s place

hour alarm information coded in BCD

format

3 to 0

0 to 9

unit place

Table 20.

Day_alarm - day alarm register (address 0Bh) bit description

Bit

Symbol

Value

Place value Description

AE_D

day alarm is enabled

1[1]

day alarm is disabled

unused

5 to 4 DAY_ALARM

0 to 3

ten’s place

day alarm information coded in BCD

format

3 to 0

0 to 9

unit place

Table 21.

Weekday_alarm - weekday alarm register (address 0Ch) bit description

Bit

Symbol

Value

Description

AE_W

weekday alarm is enabled

1[1]

weekday alarm is disabled

6 to 3 -

unused

2 to 0 WEEKDAY_ALARM 0 to 6

weekday alarm information

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