CD13S39A I ²C The various programmable features of the C serial real-time clock RTC provide more flexibility for the system-ChisynV Microelectronics (Beijing) Co., Ltd.

The CD13S39 serial real-time clock (RTC) is a lowpower clock/date device with two programmable timeof-day alarms and a programmable square-wave output. Address and data are transferred serially through an I2C bus. The clock/date 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 the 24-hour or 12-hour format with AM/PM indicator. The CD13S39 has a built-in power sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation.

Parameters

Supply(V):1.71 to 5.5
Time holding current(nA):0.3
Load Capacitance(pF):6
Memory Type:None
Interface:I2C
Function:RTC

Features

Completely Manages All Timekeeping Functions

Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100

Two Time-of-Day Alarms

Programmable Square-Wave Output

Oscillator Stop Flag
Interfaces to Most Microcontrollers

I2C Serial Interface
Low-Power Operation Extends Battery Backup Run Time

Automatic Power-Fail Detect and Switch Circuitry

Trickle-Charge Capability
Surface-Mount Package with an Integrated Crystal (DS1339C Saves Additional Space and Simplifies Design

Application

Handhelds (GPS, POS Terminals)
Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance)
Office Equipment (Fax/Printers, Copier)
Medical (Glucometer, Medicine Dispenser)
Telecommunications (Routers, Switches, Servers)
Other (Utility Meter, Vending Machine, Thermostat, Modem)

Parameters

MALL MALL

Part Number

Package

电源电压(V)

计时电流(uA)

负载电容(pF)

存储器类型

接口

功能

Temp Range(°C)

Open

CD13S39AMS8

CD13S39串行实时时钟(RTC)是低功耗的时钟/日历芯片，具有两个可编程日历闹钟与一路可编程方波输出。地址与数据通过I²C总线串行传送。时钟/日历可以提供秒、分、时、日、月、年信息。对于少于31天的月份，到每月的最后一天会自动进行调节，包括闰年修正。该时钟可以通过AM/PM指示器工作在24小时模式或12小时模式。CD13S39具有一个内部电源感应电路，可以检测到电源失效，并自动转换到备用电源。

Datasheet

PackageMSOP-8

电源电压(V) 1.71 to 5.5

计时电流(uA) 0.3

负载电容(pF) 6

存储器类型 None

接口 I2C

功能 RTC

Temp Range(°C) -40 to 85

Open

Recommended

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64 x 8, serial, I ² C Real time clock

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I ² C RTC with 56 bytes of NV RAM

Real Time Clocks CD32S31A

Ultra high precision, I²C interface, integrated RTC/TCXO/crystal

Real Time Clocks CD32S32A

Ultra high precision, I²C RTC, integrated crystal and SRAM

Real Time Clocks CD32S34A

Ultra high precision, SPI bus RTC, integrated crystal and SRAM

CD13S39A | CAD Modle