DS3232SN#T&R

The DS3232SN#T&R is a low-cost, temperature-compensated crystal oscillator (TCXO) with an integrated real-time clock (RTC) and 236 bytes of battery-backed SRAM. This device maintains accurate timekeeping even when main power is interrupted, thanks to its battery input. The integration of the crystal resonator enhances long-term accuracy and reduces part count.

The RTC tracks seconds, minutes, hours, day, date, month, and year, with automatic leap year correction valid up to 2099. It supports both 24-hour and 12-hour formats with an AM/PM indicator. The DS3232SN#T&R includes two programmable time-of-day alarms and a programmable square-wave output. Data transfer occurs serially via a fast 400kHz I2C bidirectional bus.

Key features include ±2ppm accuracy from 0°C to +40°C and ±3.5ppm from -40°C to +85°C. It operates from 2.3V to 5.5V and consumes low power, drawing between 120µA and 160µA at 3.3V to 5.5V. The device also provides a digital temperature sensor output with ±3°C accuracy.

This component is supplied in an industry-standard 20-pin, 300-mil SO package and is designed for surface mounting. Its robust features make it suitable for applications such as servers, utility power meters, telematics, and GPS systems.