DS1305EN+T&R

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DS1305EN+T&R

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IC RTC CLK/CALENDAR SPI 20-TSSOP

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Especificações

Atributo Valor
Supplier Analog Devices Inc./Maxim Integrated,Rochester Electronics, LLC
Package / Case Tape & Reel (TR),Bulk
Part Status Obsolete
Type Clock/Calendar
Features Alarm, Leap Year, NVSRAM, Trickle-Charger
Memory Size 96B
Time Format HH:MM:SS (12/24 hr)
Date Format YY-MM-DD-dd
Interface SPI
Voltage - Supply 2V ~ 5.5V
Voltage - Supply, Battery 2V ~ 5.5V
Current - Timekeeping(Max) 25.3µA ~ 81µA @ 2V ~ 5V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount

Visão Geral

Description

The DS1305EN+T&R is a serial real-time clock (RTC) from Maxim Integrated (now part of Analog Devices). It provides timekeeping with seconds, minutes, hours, day, date, month, and year data, including leap-year compensation up to 2100.
Key features:
- SPI/I²C interface for communication.
- Battery backup for continuous timekeeping.
- Low power consumption (operates down to 2V).
- 56-byte NV RAM for data storage.
- Programmable square-wave output.
Packaged in a T&R (Tape and Reel) format for automated assembly, it’s ideal for embedded systems, industrial controls, and consumer electronics.
For detailed specs, refer to the datasheet.

Equivalent

Equivalent products to the DS1305EN+T&R (a real-time clock chip by Maxim Integrated) include:
- DS1305EN (same chip, different packaging)
- DS1307 (similar functionality, I²C interface)
- MCP7940N (Microchip, I²C, battery backup)
- PCF8563 (NXP, I²C, low power)
- RX-8025SA (Epson, I²C, high accuracy)
Check pin compatibility and interface (SPI/I²C) when substituting.

Pinout

The DS1305EN+T&R is a 20-pin real-time clock (RTC) IC with battery backup, designed for timekeeping in embedded systems.
Key Functions:
- SPI/I2C interface for communication (configurable).
- Battery-backed operation (supports CR2032).
- Counts seconds, minutes, hours, date, month, year, and day of week.
- Alarm functionality with interrupt output.
- Trickle charger for supercapacitor or battery.
- 32.768kHz crystal oscillator input.
Pin Count: 20-pin (TSSOP package).
Common applications include data loggers, industrial controllers, and consumer electronics.

Manufacturer

The DS1305EN+T&R is manufactured by Maxim Integrated, now part of Analog Devices (ADI) after its acquisition in 2021.
Maxim Integrated was a leading semiconductor company specializing in analog and mixed-signal ICs, including real-time clocks (RTCs) like the DS1305. Analog Devices is a global leader in high-performance analog, mixed-signal, and power management technologies.
The DS1305EN+T&R is a serial real-time clock (RTC) with battery backup, designed for timekeeping in embedded systems.

Application

The DS1305EN+T&R is a real-time clock (RTC) IC with SPI interface, commonly used in:
1. Consumer Electronics – Clocks in appliances, smart devices.
2. Industrial Systems – Timestamping, data logging.
3. Automotive – Infotainment, dashboard clocks.
4. Embedded Systems – Microcontroller-based timing applications.
5. Medical Devices – Timekeeping for diagnostics.
It provides battery-backed timekeeping, alarms, and calendar functions, making it ideal for applications requiring precise time tracking.

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