Datasheet > 微控制器和处理器 > 计时器或实时时钟> DS1338U-18

DS1338U-18

更新时间： 2024-09-30 22:13:43

品牌	Logo	应用领域
达拉斯 - DALLAS		计时器或实时时钟微控制器和处理器
页数	文件大小	规格书
15页	373K
描述
I2C RTC with 56-Byte NV RAM

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技术参数
数据手册

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DS1338U-18 技术参数

生命周期：	Transferred	Reach Compliance Code：	unknown
风险等级：	5.63	Is Samacsys：	N
Base Number Matches：	1

DS1338U-18 数据手册

DS1338

I²C RTC with 56-Byte NV RAM

www.maxim-ic.com

GENERAL DESCRIPTION

FEATURES

The DS1338 serial real-time clock (RTC) is a low-

power, full binary-coded decimal (BCD)

clock/calendar plus 56 bytes of NV SRAM. Address

and data are transferred serially through an I²C™

interface. The clock/calendar provides seconds,

minutes, hours, day, date, month, and year

information. 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 24-hour or 12-hour format with

AM/PM indicator. The DS1338 has a built-in power-

sense circuit that detects power failures and

automatically switches to the battery supply.

Cꢀ RTC Counts Seconds, Minutes, Hours, Date of

the Month, Month, Day of the Week, and Year

with Leap-Year Compensation Valid Up to 2100

Cꢀ Available in a Surface-Mount Package with an

Integrated Crystal (DS1338C)

Cꢀ 56-Byte Battery-Backed NV RAM for Data

Storage

Cꢀ I²C Serial Interface

Cꢀ Programmable Square-Wave Output Signal

Cꢀ Automatic Power-Fail Detect and Switch Circuitry

Cꢀ Underwriters Laboratory (UL) Recognized

APPLICATIONS

ORDERING INFORMATION

Handhelds (GPS, POS Terminal)

PART

TEMP RANGE PIN-PACKAGE

TOP MARK

Consumer Electronics (Set-Top Box, Digital

Recording, Network Appliance)

DS1338Z-18

-40°C to +85°C 8 SO (150 mils)

DS1338-18

Office Equipment (Fax/Printer, Copier)

DS1338Z-3

DS1338Z-33

DS1338U-18

-40°C to +85°C 8 SO (150 mils)

DS1338-3

Medical (Glucometer, Medicine Dispenser)

Telecommunications (Router, Switcher, Server)

DS1338-33

1338

rr-18

1338

rr-3

Other (Utility Meter, Vending Machine, Thermostat,

-40°C to +85°C

8 ꢀSOP

Modem)

DS1338U-3

1338

TYPICAL OPERATING CIRCUIT

DS1338U-33

DS1338C-18

DS1338C-3

DS1338C-33

rr-33

V_CC

-40°C to +85°C 16 SO (300 mils) DS1338C-18

-40°C to +85°C 16 SO (300 mils) DS1338C-3

-40°C to +85°C 16 SO (300 mils) DS1338C-33

V_CC

CRYSTAL

V_CC

RPU

rr = second line, revision level

V_CC

SQW/OUT

SCL

Pin Configurations appear at end of data sheet.

CPU

DS1338

SDA

V_BAT

I²C is a trademark of Philips Corp. Purchase of I²C components from

Maxim Integrated Products, Inc., or one of its sublicensed Associated

Companies, conveys a license under the Philips I²C Patent Rights to

use these components in an I²C system, provided that the system

conforms to the I²C Standard Specification as defined by Philips.

GND

RPU = t_R/ C_B

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata.

1 of 15

REV: 091404

12 3 4 5 6 7...15

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与DS1338U-18相关器件

型号	品牌	获取价格	描述	数据表
DS1338U-18+	MAXIM	获取价格	I2C RTC with 56-Byte NV RAM
DS1338U-18+T&R	MAXIM	获取价格	Real Time Clock, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, MSOP-8
DS1338U-3	DALLAS	获取价格	I2C RTC with 56-Byte NV RAM
DS1338U-3	MAXIM	获取价格	I2C RTC with 56-Byte NV RAM
DS1338U-3/T&R	MAXIM	获取价格	Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO8, MICRO, SOP-8
DS1338U-3+	MAXIM	获取价格	I2C RTC with 56-Byte NV RAM
DS1338U-3+T&R	MAXIM	获取价格	Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, MICRO, SOP-8
DS1338U-33	MAXIM	获取价格	I2C RTC with 56-Byte NV RAM
DS1338U-33	DALLAS	获取价格	I2C RTC with 56-Byte NV RAM
DS1338U-33/T&R	MAXIM	获取价格	暂无描述

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