Overview
The DS1307ZN+T&R/C02 is a serial real-time clock (RTC) produced by Analog Devices Inc./Maxim Integrated. This component is designed to provide accurate timekeeping and calendar functions, making it a versatile tool for various electronic systems. The DS1307 is a low-power device that operates in both 24-hour and 12-hour formats with AM/PM indicators and includes automatic adjustments for months with fewer than 31 days, as well as leap year corrections up to the year 2100.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package Type | Small-Outline IC, Narrow (0.15in) | 8-Pin SO |
| Temperature Range | Industrial Temperature Range | -40°C to +85°C |
| Interface | I²C Serial Interface | Standard mode (100kHz) |
| Timekeeping | Seconds, Minutes, Hours, Day, Date, Month, Year | Full BCD clock/calendar |
| Memory | Non-Volatile SRAM | 56 bytes |
| Power Consumption | Battery-Backup Mode | < 500nA with oscillator running |
| Crystal Oscillator | Frequency | 32.768kHz |
| Backup Power | Automatic Power-Fail Detect and Switch Circuitry | Continues timekeeping from backup supply |
Key Features
- Low-power operation extends battery backup run time.
- Full binary-coded decimal (BCD) clock/calendar with automatic adjustments for months and leap years.
- 56 bytes of battery-backed, non-volatile SRAM with unlimited writes.
- Programmable square-wave output signal.
- Simple serial port interface to most microcontrollers via I²C bus.
- Automatic power-fail detect and switch circuitry ensures continuous timekeeping.
- Compact 8-pin DIP and 8-pin SO packages minimize required space.
Applications
- Embedded systems requiring accurate timekeeping.
- Industrial control systems.
- Medical devices.
- Automotive systems.
- Consumer electronics such as clocks, timers, and calendar devices.
Q & A
- What is the primary function of the DS1307ZN+T&R/C02?
The primary function is to provide a low-power, full binary-coded decimal (BCD) clock/calendar with 56 bytes of non-volatile SRAM.
- What is the operating temperature range of the DS1307ZN+T&R/C02?
The operating temperature range is -40°C to +85°C.
- What type of interface does the DS1307ZN+T&R/C02 use?
The DS1307 uses an I²C serial interface operating in standard mode (100kHz).
- How does the DS1307 handle power failures?
The DS1307 has automatic power-fail detect and switch circuitry that ensures continuous timekeeping by switching to the backup supply.
- What is the frequency of the crystal oscillator required for the DS1307?
The frequency of the crystal oscillator is 32.768kHz.
- Does the DS1307 support both 24-hour and 12-hour formats?
- How much power does the DS1307 consume in battery-backup mode?
The DS1307 consumes less than 500nA in battery-backup mode with the oscillator running.
- What type of memory does the DS1307 include?
The DS1307 includes 56 bytes of non-volatile SRAM.
- Is the DS1307 compatible with most microcontrollers?
- What are some common applications of the DS1307?
