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EM3027 - Real-Time Clock

Datasheet Summary

Description

The EM3027 is an Ultra Low Power CMOS real-time clock IC with two serial interface modes: I2C or SPI.

12).

The basic clock is obtained from the 32.768 kHz crystal oscillator.

Features

  •  Fully operational from 2.1 to 5.5V  Supply current typically 600 nA at 1.4V  Thermal compensated crystal frequency  Oscillator stability 0.5 ppm / Volt  Counter for seconds, minutes, hours, day of week, date months, years in BCD format and alarm  Leap year compensation  16-bits timer with 2 working modes  Two low voltage detection levels VLow1, VLow2  Automatic supply switchover  Serial communication via I2C (I2C-bus specification Rev. 03 compatible.
  • see.
  • 10.2) or SPI (3-.

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Datasheet preview – EM3027

Datasheet Details

Part number EM3027
Manufacturer EM Microelectronic
File Size 953.97 KB
Description Real-Time Clock
Datasheet download datasheet EM3027 Datasheet
Additional preview pages of the EM3027 datasheet.

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Full PDF Text Transcription

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EM MICROELECTRONIC - MARIN SA EM3027 Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and Trickle Charger Description The EM3027 is an Ultra Low Power CMOS real-time clock IC with two serial interface modes: I2C or SPI. The interface mode is selected by the chip version (see §12). The basic clock is obtained from the 32.768 kHz crystal oscillator. A thermal compensation of the frequency is based on the temperature measurement and calculation of the correction value. The temperature can be measured internally or be input by an external application to the register. The chip provides clock and calendar information in BCD format with alarm possibility.
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