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DS1308U-3+T +BOM

Real Time Clock (RTC) IC Clock/Calendar 56B I²C, 2-Wire Serial 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

DS1308U-3+T
Datasheet:

DS1308U-3+T Datasheet (PDF)
packingQty:

Reel,3000
packingOption:

Reel
tempRange:

-40 to 85C
Series:

DS1308U

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

DS1308U-3+T General Description

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 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 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.

Key Features

Compatible with Crystal ESR Up to 100kΩ Allows a Crystal to be Optimized for Cost and Space
Low-Power Operation Extends Battery Backup Run Time
- Low Timekeeping Current of 250nA (typ)
- Automatic Power-Fail Detect and Switch Circuitry
Completely Manages All Timekeeping Functions
- Real-Time Clock Counts Seconds, Minutes, Hours,Date of the Month, Month, Day of the Week, andYear with Leap-Year Compensation Valid Up to 2400
- External Clock Source for Synchronization ClockReference (e.g., 32kHz, 50Hz/60Hz Powerline,GPS 1PPS)
- 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes
- Programmable Square-Wave Output Signal
Simple Serial Port Interfaces with Most Microcontrollers
- I²C Serial Interface
Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications
Underwriters Laboratories (UL^®) Recognized

Application

Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance)
Handhelds (GPS, POS Terminal)
Medical (Glucometer, Medicine Dispenser)
Office Equipment (Fax/Printer, Copier)
Other (Utility Meter, Vending Machine, Thermostat, Modem)
Telecommunications (Router, Switcher, Server)

Specifications

model	DS1308U-3+T	packingQty	Reel,3000
packingOption	Reel	lifeCycle	production
tempRange	-40 to 85C	Product Category	Real Time Clock
Product Type	Real Time Clocks	Series	DS1308U
Factory Pack Quantity	3000	Subcategory	Clock & Timer ICs
Part # Aliases	DS1308U 90-1308U+3TR