DS1307_06 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 64 x 8, Serial, I2C Real-Time Clock

DS1307
64 x 8, Serial, I²C Real-Time Clock
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
DS1307
DS1307+
DS1307N
DS1307N+
DS1307Z
DS1307Z+
DS1307ZN
DS1307ZN+
DS1307Z/T&R
DS1307Z+T&R
DS1307ZN/T&R
DS1307ZN+T&R
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
VOLTAGE
(V)
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
+ Denotes a lead-free/RoHS-compliant device.
* A “+” anywhere on the top mark indicates a lead-free device.
PIN-PACKAGE
8 PDIP (300 mils)
8 PDIP (300 mils)
8 PDIP (300 mils)
8 PDIP (300 mils)
8 SO (150 mils)
8 SO (150 mils)
8 SO (150 mils)
8 SO (150 mils)
8 SO (150 mils) Tape and Reel
8 SO (150 mils) Tape and Reel
8 SO (150 mils) Tape and Reel
8 SO (150 mils) Tape and Reel
TOP MARK*
DS1307
DS1307
DS1307N
DS1307N
DS1307
DS1307
DS1307N
DS1307N
DS1307
DS1307
DS1307N
DS1307N
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.
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