Datasheet > DS1341

DS1341

更新时间： 2024-10-02 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		晶体
页数	文件大小	规格书
16页	649K
描述
低电流I2C RTC，可配合高ESR晶体使用

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中文翻译

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DS1341 数据手册

DS1341/DS1342

Low-Current I C RTCs for High-ESR Crystals

General Description

Features

● Low Timekeeping Current of 250nA (typ)

The DS1341/DS1342 low-current real-time clocks (RTCs)

are timekeeping devices that provide an extremely low

standby current, which permits longer life from a power

supply. The DS1341/DS1342 support high-ESR crystals,

which broaden the pool of usable crystals for the devices.

The DS1341 uses a 6pF crystal, while the DS1342 uses

a 12.5pF crystal. These devices are accessed through

● Compatible with Crystal ESR Up to 100kΩ

● Use Crystals with C = 6pF (DS1341) or

C = 12.5pF (DS1342)

● +1.8V to +5.5V Operating Voltage Range

● Maintain Time Down to +1.15V (typ)

an I C serial interface. Other features include two time-

● Fast (400kHz) I C Interface

of-day alarms, two interrupt outputs, a programmable

square-wave output, and a serial bus timeout mechanism.

● Bus Timeout for Lockup-Free Operation

The clock/calendar provides seconds, minutes, hours,

day, date, month, and year information. The date at the

end of the month is automatically adjusted for months with

fewer than 31 days, including corrections for leap year.

The clock operates in either 24hr or 12hr format with an

AM/PM indicator.

● RTC Counts Seconds, Minutes, Hours, Day, Date,

Month, and Year with Leap Year Compensation Valid

Through 2099

● External Clock Source for Synchronization Clock

Reference (e.g., 32kHz, 50Hz/60Hz Power Line,

GPS 1PPS)

The DS1341/DS1342 also include an input for synchroni-

zation. When a reference clock (e.g., 60Hz power line or

GPS 1PPS) is present at the CLKIN pin and the enable

external clock input bit (ECLK) is set to 1, the DS1341/

DS1342 RTCs are frequency-locked to the external clock

and the clock accuracy is determined by the external

source. In case of external clock failure, the clock is

switched to the crystal oscillator.

● Two Time-of-Day Alarms with Two Interrupt Outputs

● Programmable Square-Wave Output

● Industrial Temperature Range

● Small 8-Pin μSOP or TDFN Packages

Applications

● Medical

● Point of Sale (POS)

● Telematics

● Portable Instruments

● Portable Audio

The devices are available in lead(Pb)-free/RoHS-

compliant, 8-pin µSOP or TDFN packages. The devices

support a -40°C to +85°C extended temperature range.

Ordering Information

Typical Operating Circuit

PIN-

PACKAGE

OSC C

(pF)

PART

TEMP RANGE

DS1341U+

-40ºC to +85ºC 8 µSOP

-40ºC to +85ºC 8 TDFN-EP*

-40ºC to +85ºC 8 µSOP

-40ºC to +85ºC 8 TDFN-EP*

DS1341U+T&R

DS1341T+

SCL

SDA

DS1341T+T&R

DS1342U+

12.5

CLKIN/INTA

SQW/INTB

DS1342U+T&R

DS1342T+

CPU

DS1341/DS1342

DS1342T+T&R

GND

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

T&R = Tape and reel.

*EP = Exposed pad.

19-4998; Rev 3; 4/15

12 3 4 5 6 7...16

中文翻译

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与DS1341相关器件

型号	品牌	获取价格	描述	数据表
DS1341_10	MAXIM	获取价格	Low-Current I2C RTCs for High-ESR Crystals
DS1341_12	MAXIM	获取价格	Low-Current I2C RTCs for High-ESR Crystals
DS1341U+	MAXIM	获取价格	Low-Current I2C RTCs for High-ESR Crystals
DS1341U+T&R	MAXIM	获取价格	Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, USOP-8
DS1341U+TR	MAXIM	获取价格	Low-Current I2C RTCs for High-ESR Crystals
DS1342	MAXIM	获取价格	Low-Current I2C RTCs for High-ESR Crystals
DS1342	ADI	获取价格	低电流I2C RTC，可配合高ESR晶体使用
DS1342T+T&R	MAXIM	获取价格	Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, TDFN-8
DS1342U+	MAXIM	获取价格	Low-Current I2C RTCs for High-ESR Crystals
DS1342U+T&R	MAXIM	获取价格	暂无描述

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