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DS1307 Datasheet(HTML) 1 Page - Maxim Integrated Products

Part No. DS1307
Description  64 x 8, Serial, I2C Real-Time Clock
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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DS1307 Datasheet(HTML) 1 Page - Maxim Integrated Products

 
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REV: 121906
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
GENERAL DESCRIPTION
The DS1307 serial real-time clock (RTC) is a
low-power, full binary-coded decimal (BCD)
clock/calendar plus 56 bytes of NV SRAM.
Address and data are transferred serially through
an I2C, bidirectional bus. 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 AM/PM indicator.
The DS1307 has a built-in power-sense circuit
that detects power failures and automatically
switches to the backup supply. Timekeeping
operation continues while the part operates from
the backup supply.
FEATURES
Real-Time Clock (RTC) Counts Seconds,
Minutes, Hours, Date of the Month, Month,
Day of the week, and Year with Leap-Year
Compensation Valid Up to 2100
56-Byte, Battery-Backed, Nonvolatile (NV)
RAM for Data Storage
I2C Serial Interface
Programmable Square-Wave Output Signal
Automatic Power-Fail Detect and Switch
Circuitry
Consumes Less than 500nA in Battery-
Backup Mode with Oscillator Running
Optional Industrial Temperature Range:
-40°C to +85°C
Available in 8-Pin Plastic DIP or SO
Underwriters Laboratory (UL) Recognized
Typical Operating Circuit and Pin Configurations appear
at end of data sheet.
ORDERING INFORMATION
PART
TEMP RANGE
VOLTAGE
(V)
PIN-PACKAGE
TOP MARK*
DS1307
0°C to +70°C
5.0
8 PDIP (300 mils)
DS1307
DS1307+
0°C to +70°C
5.0
8 PDIP (300 mils)
DS1307
DS1307N
-40°C to +85°C
5.0
8 PDIP (300 mils)
DS1307N
DS1307N+
-40°C to +85°C
5.0
8 PDIP (300 mils)
DS1307N
DS1307Z
0°C to +70°C
5.0
8 SO (150 mils)
DS1307
DS1307Z+
0°C to +70°C
5.0
8 SO (150 mils)
DS1307
DS1307ZN
-40°C to +85°C
5.0
8 SO (150 mils)
DS1307N
DS1307ZN+
-40°C to +85°C
5.0
8 SO (150 mils)
DS1307N
DS1307Z/T&R
0°C to +70°C
5.0
8 SO (150 mils) Tape and Reel
DS1307
DS1307Z+T&R
0°C to +70°C
5.0
8 SO (150 mils) Tape and Reel
DS1307
DS1307ZN/T&R
-40°C to +85°C
5.0
8 SO (150 mils) Tape and Reel
DS1307N
DS1307ZN+T&R
-40°C to +85°C
5.0
8 SO (150 mils) Tape and Reel
DS1307N
+ Denotes a lead-free/RoHS-compliant device.
* A “+” anywhere on the top mark indicates a lead-free device.
DS1307
64 x 8, Serial, I2C Real-Time Clock


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