Overview
The DS1307Z+T&R is a serial real-time clock (RTC) manufactured by Analog Devices Inc./Maxim Integrated. This component is designed to provide accurate timekeeping and calendar functions, along with additional features such as non-volatile SRAM and a programmable square-wave output. It is particularly useful in applications where precise time and date tracking are essential.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 8-Pin SOIC (Small-Outline IC, Narrow) |
| Interface | I²C, 2-Wire Serial |
| Supply Voltage | 4.5V to 5.5V |
| Battery Backup Voltage | 2V to 3.5V |
| Operating Temperature | 0°C to 70°C (optional industrial range: -40°C to +85°C) |
| Memory Size | 56 bytes of NV SRAM |
| Date Format | Day, Date, Month, Year |
| Time Format | HH:MM:SS (12/24 hour format with AM/PM indicator) |
| Leap Year Compensation | Valid up to 2100 |
| Power Consumption | Less than 500nA in battery-backup mode with oscillator running |
Key Features
- Completely manages all timekeeping functions, including seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100.
- 56 bytes of battery-backed, general-purpose NV SRAM with unlimited writes.
- Programmable square-wave output signal.
- Simple serial port interfaces to most microcontrollers via I²C, bidirectional bus.
- Low power operation extends battery backup run time.
- Automatic power-fail detect and switch circuitry.
- Compact 8-pin DIP and 8-pin SOIC packages minimize required space.
- Optional industrial temperature range: -40°C to +85°C.
Applications
- Embedded systems requiring precise time and date tracking.
- 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 DS1307Z+T&R?
The primary function is to provide a real-time clock/calendar with additional features like NV SRAM and a programmable square-wave output.
- What interface does the DS1307Z+T&R use?
The DS1307Z+T&R uses an I²C, 2-wire serial interface.
- What is the supply voltage range for the DS1307Z+T&R?
The supply voltage range is 4.5V to 5.5V.
- How much NV SRAM does the DS1307Z+T&R have?
The DS1307Z+T&R has 56 bytes of NV SRAM.
- Does the DS1307Z+T&R support leap year compensation?
Yes, it supports leap year compensation valid up to 2100.
- What is the power consumption in battery-backup mode?
Less than 500nA with the oscillator running.
- What are the available package types for the DS1307Z+T&R?
The available package types are 8-pin SOIC (Small-Outline IC, Narrow) and 8-pin DIP.
- Is the DS1307Z+T&R RoHS compliant?
Yes, the DS1307Z+T&R is RoHS compliant.
- What is the operating temperature range for the DS1307Z+T&R?
The standard operating temperature range is 0°C to 70°C, with an optional industrial range of -40°C to +85°C.
- Does the DS1307Z+T&R have automatic power-fail detection?
Yes, it has automatic power-fail detect and switch circuitry.
