PCF8523 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

PCF8523

Real-Time Clock (RTC) and calendar

NXP Semiconductors. 

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NXP Semiconductors

PCF8523

Real-Time Clock (RTC) and calendar

8.2.2 Register Control_2

Table 8. Control_2 - control and status register 2 (address 01h) bit description

Bit

Symbol

Value

Description

7

WTAF

0[1]

no watchdog timer A interrupt generated

1

flag set when watchdog timer A interrupt

generated; flag is read-only and cleared by

reading register Control_2

6

CTAF

0[1]

no countdown timer A interrupt generated

1

flag set when countdown timer A interrupt

generated; flag must be cleared to clear

interrupt

5

CTBF

0[1]

no countdown timer B interrupt generated

1

flag set when countdown timer B interrupt

generated; flag must be cleared to clear

interrupt

4

SF

0[1]

no second interrupt generated

1

flag set when second interrupt generated; flag

must be cleared to clear interrupt

3

AF

0[1]

no alarm interrupt generated

1

flag set when alarm triggered; flag must be

cleared to clear interrupt

2

WTAIE

0[1]

watchdog timer A interrupt is disabled

1

watchdog timer A interrupt is enabled

1

CTAIE

0[1]

countdown timer A interrupt is disabled

1

countdown timer A interrupt is enabled

0

CTBIE

0[1]

countdown timer B interrupt is disabled

1

countdown timer B interrupt is enabled

[1] Default value.

PCF8523

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 7 — 28 April 2015

© NXP Semiconductors N.V. 2015. All rights reserved.

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