DS1307+TR

The DS1307+TR is one member of the DS1307 family which is designed as the real-time clock that is a lowpower, full binary-coded decimal (BCD) clock/ calendar plus 56 bytes of NV SRAM. The clock/calendar 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.

Features of the DS1307+TR are:(1)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; (2)56-byte, battery-backed, general-purpose RAM with unlimited writes; (3)I2C serial interface; (4)programmable square-wave output signal; (5)automatic power-fail detect and switch circuitry; (6)consumes less than 500nA in battery-backup; mode with oscillator running; (7)optional industrial temperature range: -40 to +85; (8)available in 8-pin plastic DIP or SO; (9)underwriters laboratories (UL) recognized.

The absolute maximum ratings of the DS1307+TR can be summarized as:(1)voltage range on any pin relative to ground:-0.5V to +7.0V;(2)operating temperature range (noncondensing) commercial:0°C to +70°C;(3)operating temperature range (noncondensing) industrial:-40°C to +85°C;(4)storage temperature range:-55°C to +125°C;(5)soldering temperature (DIP, leads):+260°C for 10 seconds;(6)soldering temperature (surface mount):refer to the JPC/JEDEC J-STD-020 specification. If you want to know more information such as the electrical characteristics about the DS1307+TR, please download the datasheet in www.seekic.com or www.chinaicmart.com.