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DS1308U-3

更新时间： 2024-02-12 17:50:12

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
16页	1244K
描述
Low-Current I2C RTC with 56-Byte NV RAM

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DS1308U-3 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TSSOP, TSSOP8,.19	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.14	信息访问方法：	I2C
中断能力：	N	JESD-30 代码：	S-PDSO-G8
长度：	3 mm	端子数量：	8
计时器数量：	1	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP8,.19
封装形状：	SQUARE	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	3/5 V	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Timer or RTC
最大供电电压：	5.5 V	最小供电电压：	2.7 V
标称供电电压：	3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	最短时间：	SECONDS
易失性：	NO	宽度：	3 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

DS1308U-3 数据手册

19-6353; Rev 0; 5/12

DS1308

Low-Current I C RTC with 56-Byte NV RAM

General Description

Features

The DS1308 serial real-time clock (RTC) is a low-power,

full binary-coded decimal (BCD) clock/calendar plus

56 bytes of NV RAM. Address and data are transferred

S Low Timekeeping Current of 250nA (typ)

S Compatible with Crystal ESR Up to 100kω

S RTC Counts Seconds, Minutes, Hours, Date,

Month, Day of the Week, and Year with Leap-Year

Compensation Up to 2400

serially through an I C interface. The clock/calendar

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

and year information. The end of the month date is auto-

matically 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 an AM/PM

indicator. The DS1308 has a built-in power-sense circuit

that detects power failures and automatically switches to

the backup supply, maintaining time and date operation.

S 56-Byte, Battery-Backed, General-Purpose RAM

with Unlimited Writes

S I C Serial Interface

S External Clock Source for Synchronization Clock

Reference (e.g., 32kHz, 50Hz/60Hz Powerline, GPS

1PPS)

S Programmable Square-Wave Output Signal

S Automatic Power-Fail Detect and Switch Circuitry

S -40NC to +85NC Operating Temperature Range

S Underwriters Laboratories (UL) Recognized

Applications

Handhelds (GPS, POS Terminal)

Consumer Electronics (Set-Top Box, Digital

Recording, Network Appliance)

Office Equipment (Fax/Printer, Copier)

Typical Operating Circuit

Medical (Glucometer, Medicine Dispenser)

Telecommunications (Router, Switcher, Server)

Other (Utility Meter, Vending Machine,

Thermostat, Modem)

Ordering Information appears at end of data sheet.

SCL

SDA

SQW/CLKIN

CPU

DS1308

BAT

GND

For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/DS1308.related

�� Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...16

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