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1338-31DVGI

更新时间： 2024-02-10 21:30:56

品牌	Logo	应用领域
艾迪悌 - IDT		电池时钟
页数	文件大小	规格书
23页	317K
描述
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM

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1338-31DVGI 数据手册

DATASHEET

REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM

IDT1338

General Description

Features

The IDT1338 is a serial real-time clock (RTC) device that

consumes ultra-low power and provides a full binary-coded

decimal (BCD) clock/calendar with 56 bytes of battery

backed Non-Volatile Static RAM. The clock/calendar

provides seconds, minutes, hours, day, date, month, and

year information. The clock operates in either the 24-hour

or 12-hour format with AM/PM indicator. The end of the

month date is automatically adjusted for months with fewer

than 31 days, including corrections for leap year. Access to

the clock/calendar registers is provided by an I²C interface

capable of operating in fast I²C mode. Built-in Power-sense

circuitry detects power failures and automatically switches

to the backup supply, maintaining time and date operation.

•

Real-Time Clock (RTC) counts seconds, minutes, hours,

day, date, month, and year with leap-year compensation

valid up to 2100

•

56-Byte battery-backed Non Volatile RAM for data

storage

Fast mode I²C Serial interface

•

Automatic power-fail detect and switch circuitry

Programmable square-wave output

Packaged in 8-pin MSOP, 8-pin SOIC, or 16-pin SOIC

(surface-mount package with an integrated crystal)

•

Industrial temperature range (-40°C to +85°C)

Applications

•

Telecom (Routers, Switches, Servers)

Handheld (GPS, Point of Sale POS terminals)

Consumer Electronics (Set-Top Box, Digital Recording,

Network Applications, Digital photo frames)

•

Office (Fax/Printers, Copiers)

Medical (Glucometer, Medicine Dispensers)

Others (Thermostats, Vending Machines, Modems, Utility

Meters)

Block Diagram

Crystal inside package

for 16-pin SOIC ONLY

1 Hz/4.096 kHz/

8.192 kHz/32.768 kHz

32.768 kHz

Oscillator and

Divider

MUX/

Buffer

SQW/OUT

VCC

GND

V_BAT

Power

Control

Logic

Clock, Calendar

Counter

SCL

SDA

I²C

Interface

56 Byte

RAM

1 Byte 7 Bytes

Buffer

Control

IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM

IDT1338

REV K 032910

12 3 4 5 6 7...23

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