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DS1394 - Low-Voltage SPI/3-Wire RTCs

Download the DS1394 datasheet PDF. This datasheet also covers the DS1390 variant, as both devices belong to the same low-voltage spi/3-wire rtcs family and are provided as variant models within a single manufacturer datasheet.

General Description

The low-voltage serial-peripheral interface (SPI™) DS1390/DS1391/DS1394 and the low-voltage 3-wire DS1392/DS1393 real-time clocks (RTCs) are clocks/ calendars that provide hundredths of a second, seconds, minutes, hours, day, date, month, and year information.

Key Features

  • Real-Time Clock Counts Hundredths of Seconds, Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Valid Up to 2100.
  • Output Pin Configurable as Interrupt or Square Wave with Programmable Frequency of 32.768kHz, 8.192kHz, 4.096kHz, or 1Hz (DS1390/DS1393/ DS1394 Only).
  • One Time-of-Day Alarm.
  • Power-Fail Detect and Switch Circuitry.
  • Reset Output/Debounced Input (DS1391/DS1393).
  • Separate SQW and INT Output (DS1392.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DS1390_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
DS1390 Low-Voltage SPI/3-Wire RTCs Maxim Integrated Products
DS1391 Low-Voltage SPI/3-Wire RTCs Maxim Integrated Products
DS1392 Low-Voltage SPI/3-Wire RTCs Maxim Integrated Products
DS1393 Low-Voltage SPI/3-Wire RTCs Maxim Integrated Products
DS1395 RAMified Real Time Clock Dallas Semiconductor

Other Datasheets by Maxim Integrated (Analog Devices)

Part Number Description
DS1302 Trickle-Charge Timekeeping Chip
DS1305 Serial Alarm Real-Time Clock
DS1306 Serial Alarm Real-Time Clock
DS1308 Low-Current I2C RTC
DS1312 Nonvolatile Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Click here for production status of specific part numbers. DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs with Trickle Charger General Description The low-voltage serial-peripheral interface (SPI™) DS1390/DS1391/DS1394 and the low-voltage 3-wire DS1392/DS1393 real-time clocks (RTCs) are clocks/ calendars that provide hundredths of a second, seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. One programmable time-of-day alarm is provided.