With the development of the times, clocks have become an indispensable part of our lives. The DS1302 clock chip is a commonly used clock chip. So, what is the pin principle of DS1302 clock chip? Let’s introduce it in detail below.
The DS1302 clock chip has a total of 8 pins, which are VCC, GND, CLK, DAT, RST, CE, IO, and SCLK. Let's introduce the functions of these pins one by one.
1. VCC
The VCC pin is the power pin of the DS1302 clock chip and needs to be connected to a 5V power supply. When using it, you need to pay attention to the stability of the power supply to avoid affecting the normal operation of the chip.
2.GND
The GND pin is the ground pin of the DS1302 clock chip and needs to be connected to the ground wire. It is also necessary to pay attention to the stability of the wiring.
3.CLK
The CLK pin is the clock input pin of the DS1302 clock chip and needs to be connected to an external clock signal. The frequency of the clock signal is generally between 1Hz and 32.768kHz, and can be provided by an external crystal oscillator or RC oscillator.
4. DAT
The DAT pin is the data input/output pin of the DS1302 clock chip. When reading or writing data, it needs to be transmitted through the DAT pin. At the same time, the DAT pin also has a pull-up resistor, which can ensure the stability of data transmission without connecting to an external power supply.
5.RST
The RST pin is the reset pin of the DS1302 clock chip. When the chip needs to be reset, it can be achieved through the RST pin. It should be noted that the RST pin needs to be pulled low for at least 1ms during reset to ensure that the chip can be reset normally.
6. CE
The CE pin is the chip select pin of the DS1302 clock chip. When in use, the CE pin needs to be pulled low to make the chip selected. When the chip is not selected, all pins are in a high-impedance state to save power.
7.IO
The IO pin is the input/output control pin of the DS1302 clock chip. When using it, you need to set the working mode of the IO pin according to the specific application scenario. When the IO pin is in output mode, external devices can be controlled through the IO pin. When the IO pin is in input mode, the status of the external device can be read through the IO pin.
8. SCLK
The SCLK pin is the serial clock input pin of the DS1302 clock chip. When in use, the SCLK pin needs to be connected to an external serial clock signal source. Through the SCLK pin, serial communication between the chip and external devices can be achieved.
The pin principle of the DS1302 clock chip is relatively simple, but there are still many details that need to be paid attention to. When using it, you need to set the working mode of each pin according to the specific application scenario to achieve the best working effect. At the same time, you also need to pay attention to the stability of the power supply and the stability of the wiring to ensure that the chip can work normally. If you need to purchase, apply for sample testing, BOM order, etc., please contact us via the following email address: