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DS1393 Datasheet Low-Voltage SPI/3-Wire RTCs

Manufacturer: Maxim Integrated (now Analog Devices)

Download the DS1393 datasheet PDF. This datasheet also includes the DS1390 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

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

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.

Overview

Click here for production status of specific part numbers.

DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs with Trickle Charger.

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.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
DS1390 Low-Voltage SPI/3-Wire RTCs
DS1391 Low-Voltage SPI/3-Wire RTCs
DS1392 Low-Voltage SPI/3-Wire RTCs
DS1340 I2C RTC
DS1341 (DS1341 / DS1342) Low-Current I2C RTCs
DS1342 (DS1341 / DS1342) Low-Current I2C RTCs
DS1343 (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs
DS1344 (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs
DS1345AB 1024k Nonvolatile SRAM
DS1345Y 1024k Nonvolatile SRAM