Hello, guys welcome to new post. Today we will learn Introduction to DS1307 I2C. THe DS1307 is less power-consuming BCD real-time clock integrated circuit. It comes with fifty six-byte SVRAM that performs the I2C protocol. It has features to operate on the power supply and also can work on the battery on circuit requirements.
In this post, we will discuss its working, pinout features, and some other related parameters. So let’s get started with Introduction to DS1307 I2C.
Introduction to DS1307 I2C
- DS1307 is RTC module that uses less input power and has features of a complete binary decimal code clock pulse with fifty-six byte NV static ram.
- It used I2C protocol for data transmission in two direction. Its clock used to show the time details like minutes, hours second day, etc
- Its setting is that when the month is completed new dates are automatically adjusted also for leap years
- It follows two formates of time either twenty-four-hour and 12 hours that is AM and PM
- It comes with power senses circuitry used for detection of power removal and shited to backup power.
- Its time showing process continues also on the backup supply.
Features of DS1307 IC
- Features of DS1307 are explained here
- It is a real-time clock that is used to show hours, minutes, seconds, and months and also leap year
- Its compensation is valid for up to twenty-one hundred
- Its fifty-six-byte module comes with a backup power supply and RAM.
- It is a serial port for I2C communications with microcontrollers and other devices
- It is an eight-pin dual in-line package and eight-pin SO.
DS1307 I2C Pins
- The main pins of this module are explained here
- Pin 1, and 2 are X1 and X2 used for crystal oscillator connection
- Pin 3 is Vbat used to connect the positive point of the battery
- Pin 4 GDN its is a ground pin
- Pin 5, 6 are SCL and SDA used to make the I2c communication to processors and controllers
- Pin7 is SQW used to get the square waves
- Pin 8 is Vcc gives five volts supply to the board
DS1307 I2C Applications
- Its common applications are discussed here
- It used in robot circuits
- Different games used this module
- Used in servers
- Used in power meters
- Used in GPS and other satellite
DS1307 AC ELECTRICAL CHARACTERISTICS
| CHARACTERISTICS | SYMBOL | MIN TYP MAX | units | |
| Clock frequency of SCl | fSCL | 0 to 100 | kHz | |
| Stop and start condition a bus-free ime | tBUF | 4.7 | µs | |
| it is hole time and start conditon | tHD:STA | 4 | µs | |
| SCL low period | tLOW | 4.7 | µs | |
| SCL high period | tHIGH | 4 | µs | |
| Time adjustment of start conditon | tSU:STA | 4.7 | µs | |
| Data Hold Time | tHD:DAT | 0 | µs | |
| Data Setup Time | SU:DAT | 250 | ns | |
| SDA SCL real time | tR | 1000 | ns | |
| SDA and SCL Fall time | tF | 300 | µs | |
| Stop condition set up time | tSU:STO | 4.7 | µs |
What protocol does DS1307 use?
- DS1307 is an RTC that operates with the I2C protocol. Dara of different registers read by accessing the address for reading with the use of I2C communication.
What is the function of DS1307?
- The DS1307 serial real-time clock has low-power features and a full binary-coded decimal clock with 56 bytes of NV SRAM. Address and date are shifted in serial configuration through the I2C bidirectional bus. The clock provides details for seconds, minutes, hours, days, months, and years.
What is the difference between DS1302 and DS1307?
- DS1302 communications through a 3 3-wire interface with the use of 3 pins: SCLK, input-output, and CE. The DS1307 did communications with I2C and needed SDA and SCL protocols.
How to read DS1307?
- For accessing DS1307 for the reading function, there is a need for setting the register pointer first of all.
- Get an acknowledgment bit to confirm that DS1307 is responding.
- The byte of data in the write function will adjust the register pointer.
What is the I2C address?
- The I2C addresses are 7 bits or 10 bits. The use of a 10-bit address is rare.
What is the equivalent of DS1307?
- PCF8563 RTC is equivalent to DS1307, which is a low-power I2C RTC component that is pin-supported with DS1307 and comes with the same function set. MCP7940N RTC is also equivalent to that comes with low power. I2C RTC module that comes with a small form factor and has features like a backup battery input and SRAM
Read also
That is all about the Introduction to DS1307 I2C all details have been explained. If you have any further queries ask in the comments. Will thoroughly guide you. See you in the next tutorial.
