PCF212311 데이터 시트보기 (PDF) - NXP Semiconductors.

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PCF212311

SPI Real time clock/calendar

NXP Semiconductors. 

NXP Semiconductors

6. Block diagram

PCF2123

SPI Real time clock/calendar

OSCI

OSCO

TEST

VDD

VSS

SDO

SDI

SCL

CE

COSCI

OSCILLATOR

32.768 kHz

DIVIDER

COSCO

MONITOR

POWER ON

RESET

WATCH

DOG

SPI

INTERFACE

Rpd

PCF2123

OFFSET FUNCTION

0Dh

Offset_register

TIMER FUNCTION

0Eh

Timer_clkout

0Fh

Countdown_timer

CONTROL

00h

Control_1

01h

Control_2

TIME

02h

Seconds

03h

Minutes

04h

Hours

05h

Days

06h

Weekdays

07h

Months

08h

Years

ALARM FUNCTION

09h

Minute_alarm

0Ah

Hour_alarm

0Bh

Day_alarm

0Ch

Weekday_alarm

Fig 1. Block diagram of PCF2123

CLOCK OUT

CLKOE

CLKOUT

INTERRUPT

INT

013aaa223

PCF2123

Product data sheet

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

Rev. 5 — 27 April 2011

© NXP B.V. 2011. All rights reserved.

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