Datasheet4U Logo Datasheet4U.com

DS1344 - (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs

This page provides the datasheet information for the DS1344, a member of the DS1343 (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs family.

Datasheet Summary

Description

The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source.

The devices also support high-ESR crystals, broadening the pool of usable crystals for the devices.

Features

  • S Low Timekeeping Current of 250nA (typ) S Compatible with Crystal ESR Up to 100kI S Versions Available to Support Either 6pF or 12.5pF Crystals S RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Through 2099 S Power-Fail and Switch Circuitry S Three Operating Voltages 1.8V ±5% 3.0V±10% 3.3V ±10% S Trickle-Charge Capability S Maintain Time Down to 1.15V (typ) S Support Motorola SPI Modes 1 and 3, or Standard 3-Wire Interface S Burst.

📥 Download Datasheet

Datasheet preview – DS1344

Datasheet Details

Part number DS1344
Manufacturer Maxim Integrated Products
File Size 1.26 MB
Description (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs
Datasheet download datasheet DS1344 Datasheet
Additional preview pages of the DS1344 datasheet.

📁 Similar Datasheet

  • DS1345BL - 1024K Nonvolatile SRAM (Dallas Semiconducotr)
  • DS1345W - 1024k Nonvolatile SRAM (Dallas Semiconducotr)
  • DS1345YL - 1024K Nonvolatile SRAM (Dallas Semiconducotr)
  • DS1347 - SPI-Compatible Real-Time Clock (Maxim Integrated)
  • DS1300-3 - AC-DC / Distributed Power Front-End 2U (Emerson)
  • DS1302 - Trickle-Charge Timekeeping Chip (Maxim Integrated)
  • DS1302 - Trickle Charge Timekeeping Chip (TGS)
  • DS1305 - Serial Alarm Real-Time Clock (Maxim Integrated)
  • DS1306 - Serial Alarm Real-Time Clock (Maxim Integrated)
  • DS1307 - 64 X 8 Serial Real Time Clock (TGS)
Other Datasheets by Maxim Integrated Products
  • 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
  • DS1345AB - 1024k Nonvolatile SRAM
  • DS1345Y - 1024k Nonvolatile SRAM
  • DS1371 - 32-Bit Binary Counter Watchdog Clock
  • DS1372 - Binary Counter Clock

Full PDF Text Transcription

Click to expand full text
19-5801; Rev 0; 3/11 Low-Current SPI/3-Wire RTCs General Description The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source. The devices also support high-ESR crystals, broadening the pool of usable crystals for the devices. The clock/calendar provides 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 24-hour or 12-hour format with an AM/PM indicator. Address and data are transferred serially through an SPI™ or 3-wire interface. Two programmable time-of-day alarms are provided.
Published: |