DS1307ZN+T&R

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DS1307ZN+T&R

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IC RTC CLK/CALENDAR I2C 8-SOIC

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Especificações

Atributo Valor
Supplier Analog Devices Inc./Maxim Integrated
Package / Case Tape & Reel (TR)
Part Status Obsolete
Type Clock/Calendar
Features Leap Year, NVSRAM, Square Wave Output
Memory Size 56B
Time Format HH:MM:SS (12/24 hr)
Date Format YY-MM-DD-dd
Interface I²C, 2-Wire Serial
Voltage - Supply 4.5V ~ 5.5V
Voltage - Supply, Battery 2V ~ 3.5V
Current - Timekeeping(Max) 200µA @ 5V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount

Visão Geral

Description

The DS1307ZN+T&R is a low-power, I²C real-time clock (RTC) with 56 bytes of battery-backed SRAM. It provides seconds, minutes, hours, day, date, month, and year data, with automatic leap-year compensation up to 2100. Operating from 1.8V to 5.5V, it’s ideal for embedded systems requiring timekeeping.
Key features:
- I²C interface (up to 400kHz)
- Battery backup for continuous timekeeping
- Programmable square-wave output
- 56-byte NV SRAM for data storage
Packaged in 8-pin SOIC (150mil), the "T&R" suffix indicates tape-and-reel packaging for automated assembly. Common applications include digital clocks, data loggers, and IoT devices.
For setup, connect to a microcontroller via I²C, add a backup battery (e.g., 3V coin cell), and configure registers for time/date.

Equivalent

Equivalent products to the DS1307ZN+T&R (real-time clock IC) include:
- DS3231 (higher accuracy, I²C)
- PCF8563 (I²C, lower cost)
- MCP7940N (I²C, battery backup)
- RX-8025T (I²C, low power)
These alternatives offer similar functionality with varying features like accuracy, power consumption, or cost. Always check pin compatibility and datasheets for your specific needs.

Features

The DS1307ZN+T&R is a low-power, I²C real-time clock (RTC) with battery backup. Key features:
- I²C Interface: Simple serial communication (up to 400 kHz).
- Timekeeping: Tracks seconds, minutes, hours, day, date, month, and year (with leap-year compensation up to 2100).
- Battery Backup: Operates from a 3V coin cell when main power fails.
- Low Power: Consumes <500nA in battery mode.
- 56-Byte NV RAM: For general data storage.
- Programmable Square-Wave Output: Configurable frequencies (1Hz, 4kHz, 8kHz, 32kHz).
- Operating Voltage: 4.5V to 5.5V (main power).
- Industrial Temp Range: -40°C to +85°C.
- Package: 8-pin SOIC (T&R = Tape & Reel packaging).
Ideal for embedded systems, data loggers, and IoT devices requiring timekeeping.

Pinout

The DS1307ZN+T&R is an 8-pin real-time clock (RTC) IC with the following pin functions:
1. X1, X2 (Pins 1, 2): Connect to a 32.768kHz crystal.
2. VBAT (Pin 3): Backup battery input for power retention.
3. GND (Pin 4): Ground.
4. SDA (Pin 5): I²C data line.
5. SCL (Pin 6): I²C clock line.
6. SQW/OUT (Pin 7): Square wave/output driver.
7. VCC (Pin 8): Main power supply (5V).
It provides timekeeping, calendar functions, and 56 bytes of NV RAM. Operates via I²C interface.

Application

The DS1307ZN+T&R is a real-time clock (RTC) IC commonly used in applications requiring accurate timekeeping. Key application areas include:
- Embedded Systems: Timestamping events in microcontrollers.
- Consumer Electronics: Clocks in appliances, smart devices.
- Industrial Automation: Logging data with precise timing.
- Automotive: Dashboard clocks, event recorders.
- Medical Devices: Time-sensitive monitoring equipment.
- IoT Devices: Battery-backed timekeeping for sensors.
Its low power consumption, I²C interface, and battery backup support make it ideal for portable and power-sensitive designs.

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