PCF2129T 데이터 시트보기 (PDF) - NXP Semiconductors.

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PCF2129T

Accurate RTC with integrated quartz crystal for industrial

NXP Semiconductors. 

NXP Semiconductors

PCF2129T

Accurate RTC with integrated quartz crystal for industrial

8.2.2 Register Control_2

Table 7. Control_2 - control and status register 2 (address 01h) bit description

Bit Symbol

Value Description

Reference

7

MSF

0

[1] no minute or second interrupt generated

Section 8.12

1

flag set when minute or second interrupt

generated;

flag must be cleared to clear interrupt

6

WDTF

0

[1] no watchdog timer interrupt or reset

generated

Section 8.12.3

1

flag set when watchdog timer interrupt or

reset generated;

flag cannot be cleared by command

(read-only)

5

TSF2

0

[1] no timestamp interrupt generated

Section 8.11.1

1

flag set when TS input is driven to ground;

flag must be cleared to clear interrupt

4

AF

0

[1] no alarm interrupt generated

Section 8.9.6

1

flag set when alarm triggered;

flag must be cleared to clear interrupt

3

T

0

[2] unused

-

2

TSIE

0

[1] no interrupt generated from timestamp flag Section 8.12.5

1

interrupt generated when timestamp flag set

1

AIE

0

[1] no interrupt generated from the alarm flag

Section 8.12.4

1

interrupt generated when alarm flag set

0

T

0

[2] unused

-

[1] Default value.

[2] When writing to the register this bit always has to be set logic 0.

PCF2129T

Product data sheet

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

Rev. 3 — 12 February 2013

© NXP B.V. 2013. All rights reserved.

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