CD13S39A I ²C The various programmable features of the C serial real-time clock RTC provide more flexibility for the system-承芯微-承芯微电子(北京)有限公司

Real Time Clocks

CD13S39A

I ²C The various programmable features of the C serial real-time clock RTC provide more flexibility for the system

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CD13S39AMS8
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Supply(V):1.71 to 5.5
Time holding current(nA):0.3
Load Capacitance(pF):6
Memory Type:None
Interface:I2C
Function:RTC

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

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)

Description

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.

CD13S39A | CAD Model

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