معرفی:
کاربردDS1307 محصول Dallas محاسبه و نگهداری زمان واقعی real time clock میباشد. این ماژول میتواند ساعت، دقیقه، ثانیه، روز، ماه، سال و ایام هفته را نگهداری و پردازش کند. این ماژول از طریق ارتباط 2 سیمه I2C به آردوینو متصل میشود. بر روی این ماژول علاوه بر RTC ، یک EEPROM سریال به شماره 24C32 با حافظه 32 کیلوبیت تعبیه شده که از طریق رابط I2C مشترک میتوان به آن دسترسی داشت.
مشخصات:
- رابط 2 سیمه I2C
- نگهداری ساعت ، دقیقه ، ثانیه
- نگهداری روز ، ماه ، سال
- تصحیح تقویم بر اساس سالهای کبیسه
- محاسبه تقویم تا سال 2100 میلادی
- محاسبه خودکار ماههای کمتر از 31 روز
- 56 بایت حافظه غیر فرار در دسترس
- جریان مصرفی باطری backup کمتر از 500nA
- امکان دسترسی به EEPROM سریال
- ابعاد 2.8 در 2.8 سانتی متر
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. The address and data are transferred serially through an I2C, bidirectional bus. The accuracy of the clock is dependent upon the accuracy of the crystal and the accuracy of the match between the capacitive load of the oscillator circuit and the capacitive load for which the crystal was trimmed.
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 the 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.
The DS1307 uses an external 32.768kHz crystal. The oscillator circuit does not require any external resistors or capacitors to operate. This module supports the I2C protocol. A device that sends data onto the bus is defined as a transmitter and a device receiving data as a receiver.
The timekeeping operation continues while the part operates from the backup supply.
This is a great battery-backed real-time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for data logging, clock-building, time stamping, timers and alarms, etc.
Access is obtained by implementing a START condition and providing a device identification code followed by a registered address. Subsequent registers can be accessed sequentially until a STOP condition is executed.
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
Chip: DS1307
Memory Storage: 24C32 32KB I2C EEPROM
56 Bytes of Non-volatile memory available to the use
Programmable Square-Wave Output Signal
Input Voltage: 5V
Frequency: 32.768KHz
Interface: I2C
Operating Temperature: -40℃ ~ +85℃
Size: 27mm x 28mm x 8.4mm
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