Datasheet > DS1347

DS1347

更新时间： 2024-11-20 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		时钟
页数	文件大小	规格书
17页	231K
描述
小电流、SPI兼容实时时钟

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中文翻译

获取价格

数据手册

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DS1347 数据手册

Low-Current, SPI-Compatible

Real-Time Clock

DS1347

General Description

Benefits and Features

The DS1347 SPI-compatible real-time clock (RTC) con-

tains a real-time clock/calendar and 31 x 8 bits of static

random-access memory (SRAM). The real-time

clock/calendar provides seconds, minutes, hours, day,

date, month, year, and century information. A time/date

programmable polled ALARM is included in the device.

The end-of-the-month date is automatically adjusted for

months with fewer than 31 days, including corrections

for leap year. The clock operates in either the 24hr or

12hr format with an AM/PM indicator. The device oper-

ates with a supply voltage of +2V to +5.5V, are avail-

able in the ultra-small 8-pin TDFN package, and work

over the -40°C to +85°C industrial temperature range.

• Completely Manages All Timekeeping Functions

• RTC Counts Seconds, Minutes, Hours, Day of

Week, Date of Month, Month, Year, and Century

• Leap-Year Compensation

• 31 x 8-Bit SRAM for Scratchpad Data Storage

• Programmable Time/Date Polled ALARM Function

• Uses Standard 32.768kHz Watch Crystal

• Low-Power Operation Extends Battery Life

• Low Timekeeping Current (400nA at 2V)

• +2V to +5.5V Wide Operating Voltage Range

• Standard Serial Port Interfaces with Most

Microcontrollers

• SPI (Mode 1 or 3) Interface: 4MHz at 5V, 1MHz

at 2V

Applications

• Single-Byte or Multiple-Byte (Burst Mode) Data

Transfer for Read or Write of Clock Registers or

SRAM

Point-of-Sale Equipment

Intelligent Instruments

Fax Machines

• 3mm x 3mm x 0.8mm, 8-Pin TDFN Package

Battery-Powered Products

Portable Instruments

Minimizes Required Space

• No External Crystal Bias Resistors or Capacitors

Required

Ordering Information

OSC C

(pF)

PART

TEMP RANGE

PIN-PACKAGE

DS1347T+

-40°C to +85°C

12.5

8 TDFN-EP*

Typical Operating Circuit

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

+3.3V

0.1µF

+3.3V

DS1347

32.768kHz

CRYSTAL

SCLK

µc

DOUT

DIN

GND

19-6007; Rev 5; 4/15

12 3 4 5 6 7...17

中文翻译

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DS1350AB-70	DALLAS	获取价格	4096k Nonvolatile SRAM with Battery Monitor
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