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DS1339U-3-TR

Description
Real Time Clock
Categorysemiconductor    Analog mixed-signal IC   
File Size267KB,20 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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DS1339U-3-TR Overview

Real Time Clock

DS1339U-3-TR Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerMaxim
Product CategoryReal Time Clock
Mounting StyleSMD/SMT
Package / CaseuSOP
RTC Bus InterfaceSerial
Time FormatHH:MM:SS
Battery Backup SwitchingBackup Switching
Supply Voltage - Max3.3 V
Supply Voltage - Min2.7 V
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
PackagingReel
FunctionAlarm, Calendar, Clock, Trickle Charger
ProductReal Time Clocks
DS1339
I
2
C Serial Real-Time Clock
GENERAL DESCRIPTION
The DS1339 serial real-time clock (RTC) is a low-
power clock/date device with two programmable time-
of-day alarms and a programmable square-wave
output. Address and data are transferred serially
2
through an I C 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 DS1339 has a built-in power-
sense circuit that detects power failures and
automatically switches to the backup supply,
maintaining time, date, and alarm operation.
BENEFITS AND FEATURES
Completely Manages All Timekeeping
Functions
o
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
o
56-Byte, Battery-Backed, General-
Purpose RAM with Unlimited Writes
o
Programmable Square-Wave Output
Signal
Simple Serial Port Interfaces to Most
Microcontrollers
o
I
2
C Serial Interface
Low Power Operation Extends Battery
Backup Run Time
o
Consumes Less than 500nA in
Battery-Backup Mode with Oscillator
Running
o
Automatic Power-Fail Detect and
Switch Circuitry
8-Pin DIP and 8-Pin SO Minimizes
Required Space
Optional Industrial Temperature Range:
-40°C to +85°C Supports Operation in a
Wide Range of Applications
Underwriters Laboratories® (UL)
Recognized
APPLICATIONS
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
)
Pin Configurations appear at end of data sheet.
ORDERING INFORMATION
PART
DS1339C-2#
DS1339C-3#
DS1339C-33#
DS1339U-2+
DS1339U-3+
DS1339U-33+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
VOLTAGE (V)
2.0
3.0
3.3
2.0
3.0
3.3
PIN-PACKAGE
16 SO (300 mils)
16 SO (300 mils)
16 SO (300 mils)
8
µSOP
8
µSOP
8
µSOP
TOP MARK†
DS1339C-2
DS1339C-3
DS1339C-33
1339 rr-2
1339 rr-3
1339 rr-33
+Denotes
a lead(Pb)-free/RoHS-compliant package.
#Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. The lead finish is JESD97 category
e3, and is compatible with both lead-based and lead-free soldering processes.
†A
“+” anywhere on the top mark indicates a lead(Pb)-free device. A “#” denotes a RoHS-compliant device. rr
=
second line, revision code
1 of 20

DS1339U-3-TR Related Products

DS1339U-3-TR DS1339C-33-
Description Real Time Clock Real Time Clock
Manufacturer Maxim Maxim
Product Category Real Time Clock Real Time Clock
Mounting Style SMD/SMT SMD/SMT
Package / Case uSOP SOIC-16
RTC Bus Interface Serial Serial
Time Format HH:MM:SS HH:MM:SS
Battery Backup Switching Backup Switching Backup Switching
Supply Voltage - Max 3.3 V 5.5 V
Supply Voltage - Min 2.7 V 2.97 V
Minimum Operating Temperature - 40 C - 40 C
Maximum Operating Temperature + 85 C + 85 C
Function Alarm, Calendar, Clock, Trickle Charger Alarm, Calendar, Clock, Trickle Charger
Product Real Time Clocks Real Time Clocks
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