DS1307Z+T&R Detailed explanation of pin function specifications and circuit principle instructions
The model "DS1307Z+T&R" belongs to Dallas Semiconductor, which is now a part of Maxim Integrated. This particular model is a real-time Clock (RTC) integrated circuit.
Packaging Information:
The DS1307Z+T&R typically comes in an SOIC-8 package (Small Outline Integrated Circuit), which has 8 pins in total. Each pin in this package serves a specific function for the operation of the RTC. The Z suffix represents the package type, and T&R stands for tape and reel packaging, commonly used for surface-mount technology.Detailed Pin Function and Specifications for DS1307Z+T&R (8-pin package):
Here is a detailed breakdown of the pin functions for the DS1307Z+T&R in an SOIC-8 package:
Pin Number Pin Name Function Description 1 VCC This is the power supply pin. The DS1307 requires a voltage between 4.5V and 5.5V for proper operation. It powers the internal logic and clock circuitry. 2 SCL This is the Serial Clock Line (SCL) used for I2C communication. It is the clock signal that synchronizes data transfer between the DS1307 and the microcontroller or processor. 3 SDA This is the Serial Data Line (SDA) used for I2C communication. It carries data to and from the DS1307 during read/write operations. 4 VOUT This pin provides a regulated output voltage of 5V (internally derived from VCC). It is used to power external components such as the backup power supply. 5 SQW/OUT This pin can be configured as a square wave output or a frequency output (e.g., 1Hz, 4kHz). It can also serve as an output for the alarm signal when configured. 6 RST The Reset pin is used to reset the DS1307 or to trigger an external device. It is active low, meaning that a low signal will reset the chip. 7 GND This is the ground pin. It should be connected to the system's ground for proper operation of the DS1307. 8 BAT This is the battery input pin. It is used for connecting an external backup battery (typically a coin cell) to maintain timekeeping when the main power supply is lost.Pin Function Description (Continued):
Each pin plays a critical role in the DS1307’s operation, whether it's powering the device, communicating data, or ensuring time accuracy even when the primary power is removed (using the battery input).
FAQ (Frequently Asked Questions):
What is the VCC pin function in the DS1307Z+T&R? The VCC pin supplies the main power to the DS1307. The chip requires a voltage between 4.5V and 5.5V for proper operation. What is the purpose of the SDA and SCL pins? The SDA and SCL pins are used for I2C communication, where SDA carries data and SCL provides the clock signal. What is the output of the SQW/OUT pin in DS1307? The SQW/OUT pin can output a square wave signal or act as an alarm signal, depending on configuration. What voltage should be connected to the VOUT pin? The VOUT pin provides a regulated 5V output to power external devices when VCC is supplied. What is the maximum current consumption of the DS1307Z+T&R? The DS1307 typically consumes around 100µA during normal operation and less than 1µA when in battery-backed mode. How does the battery input function in the DS1307Z+T&R? The BAT pin is for connecting a backup battery to keep the timekeeping function active even when the main VCC is removed. What is the role of the RST pin in the DS1307? The RST pin is used to reset the DS1307 or to trigger a reset for external systems. How do I change the clock settings on the DS1307? Clock settings can be changed by sending appropriate data through the SDA line while synchronizing with the SCL clock. Can the DS1307Z+T&R be used for setting alarms? Yes, the DS1307 supports an alarm feature, and the SQW/OUT pin can be used to output an alarm signal. What is the size of the DS1307Z+T&R? The DS1307Z+T&R comes in a compact SOIC-8 package, which has 8 pins. Can the DS1307 be used without a backup battery? The DS1307 can function without a backup battery, but it will lose time when the primary power is turned off. How does the DS1307 maintain time when VCC is disconnected? When VCC is disconnected, the BAT pin keeps the DS1307 running using the backup battery. What is the output frequency of the SQW/OUT pin? The output frequency of the SQW/OUT pin can be set to 1Hz, 4kHz, or 8kHz, depending on the configuration. What is the reset behavior when the RST pin is activated? When the RST pin is activated (low), the DS1307 will be reset to its initial state. Is the DS1307 compatible with 3.3V systems? The DS1307 is typically designed for 5V systems, but it can work with 3.3V systems if I2C voltage levels are properly matched. What kind of battery is recommended for the BAT pin? A 3V coin-cell battery (like CR2032 ) is commonly used for the BAT pin to keep time during power outages. What happens if the VOUT pin is not used? If the VOUT pin is not connected to an external device, the DS1307 will still function normally, but no external voltage will be supplied. What is the DS1307's I2C address? The DS1307 has a default I2C address of 0x68 (fixed address, no configuration required). Can the DS1307Z+T&R operate in low-power modes? Yes, the DS1307 has a low-power mode and can consume minimal current during operation, especially when the backup battery is active. What is the clock accuracy of the DS1307Z+T&R? The DS1307 typically has an accuracy of ±2 minutes per month under normal conditions.This explanation covers all 8 pins of the DS1307Z+T&R, their functions, and common queries. If you need further clarifications or additional information, feel free to ask!
