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The DS1338C-33#T&R is a real-time clock (RTC) module manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features:

Manufacturer:

Maxim Integrated (Analog Devices)

Part Number:

DS1338C-33#T&R

Description:

The DS1338C-33#T&R is a low-power serial real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and a 56-byte NV SRAM. It communicates via an I²C interface and provides accurate timekeeping with battery backup support.

Key Features:

• Real-Time Clock (RTC):
• Tracks seconds, minutes, hours, day, date, month, and year with leap-year compensation.
• 12-hour or 24-hour time format.
• Power Supply:
• Operating Voltage: 2.97V to 5.5V (3.3V nominal).
• Low Power Consumption:
• Active Mode: 500µA (typical).
• Battery Backup Mode: <1µA (typical).
• Memory:
• 56-byte nonvolatile (NV) SRAM for data storage.
• Interface:
• I²C serial interface (supports up to 400kHz).
• Oscillator:
• Integrated temperature-compensated crystal oscillator (TCXO) for improved accuracy.
• ±2ppm accuracy from 0°C to +40°C.
• Additional Features:
• Programmable square-wave output.
• Power-fail detection and automatic switch to backup supply.
• Alarm function with interrupt capability.
• Package:
• 8-pin SOIC (150mil) tape and reel (T&R) packaging.
• Operating Temperature Range:
• Commercial: 0°C to +70°C.

This RTC is commonly used in embedded systems, data loggers, and other applications requiring precise timekeeping with low power consumption.