PCF2127ATSLASH1 datasheet(10/80 Pages) NXP

10 / 80 page

PCF2127A_2

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Product data sheet

Rev. 02 — 7 May 2010

10 of 80

NXP Semiconductors

PCF2127A

Integrated RTC, TCXO and quartz crystal

8.2.2 Register Control_2

[1]

Default value.

Table 6.

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

Bit

Symbol

Value

Description

Reference

7MSF

[1]

no minute or second interrupt generated

Section 8.13

flag set when minute or second interrupt

generated;

flag must be cleared to clear interrupt

6WDTF

[1]

no watchdog timer interrupt or reset

generated

Section 8.13.4

flag set when watchdog timer interrupt or

reset generated;

flag cannot be cleared by using the

interface (read-only)

5TSF2

[1]

no timestamp interrupt generated

Section 8.12.1

flag set when TS input is driven to ground;

flag must be cleared to clear interrupt

4AF

[1]

no alarm interrupt generated

Section 8.10.6

flag set when alarm triggered;

flag must be cleared to clear interrupt

CDTF

[1]

no countdown timer interrupt generated

Section 8.11.4

flag set when countdown timer interrupt

generated;

flag must be cleared to clear interrupt

2TSIE

[1]

no interrupt generated from timestamp flag

Section 8.13.6

interrupt generated when timestamp flag set

1AIE

[1]

no interrupt generated from the alarm flag

Section 8.13.5

interrupt generated when alarm flag set

CDTIE

[1]

no interrupt generated from countdown timer

flag

Section 8.13.2

interrupt generated when countdown timer

flag set

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