DS1340C
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DS1340C

I²C RTC with Trickle Charger

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I²C Real-Time Clock with Trickle Charger Offers Software Clock Calibration

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 14
1ku List Price Starting From $2.50
Features
  • Enhanced Second Source for the ST M41T00
  • Completely Manages All Timekeeping Functions
    • RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year
    • Software Clock Calibration
    • Oscillator Stop Flag
  • Low-Power Operation Extends Battery Backup Run Time
    • Low Timekeeping Voltage Down to 1.3V
    • Automatic Power-Fail Detect and Switch Circuitry
    • Trickle-Charge Capability
  • Three Operating Voltage Ranges (1.8V, 3V, and 3.3V) Supports Systems Using Legacy and Modern Power Buses
  • Surface-Mount Package with an Integrated Crystal (DS1340C) Saves Additional Space and Simplifies Design
  • Simple Serial Port Interfaces with Most Microcontrollers
    • Fast (400kHz) I2C Interface
  • 8-Pin µSOP or SO Package Minimizes Required Space
  • Underwriters Laboratories (UL®) Recognized
Additional Details
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The DS1340 is a real-time clock (RTC)/calendar that is pin compatible and functionally equivalent to the ST M41T00, including the software clock calibration. The device additionally provides trickle-charge capability on the VBACKUP pin, a lower timekeeping voltage, and an oscillator STOP flag. Block access of the register map is identical to the ST device. Two additional registers, which are accessed individually, are required for the trickle charger and flag. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. A built-in power-sense circuit detects power failures and automatically switches to the backup supply. The device is programmed serially through an I²C bidirectional bus.

Applications

  • Medical Equipment
  • Point-of-Sale Equipment
  • Portable Instrumentation
  • Telecommunications
Part Models 14
1ku List Price Starting From $2.50

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS1340C-18#
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DS1340C-3#
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DS1340C-33#
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DS1340C-33#T&R
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DS1340U-18+
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DS1340U-3+
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DS1340U-3+T&R
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DS1340U-33+
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DS1340U-33+T&R
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DS1340Z-18+
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DS1340Z-3+
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DS1340Z-3+T&R
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DS1340Z-33+
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DS1340Z-33+T&R
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Part Models

Product Lifecycle

PCN

Sep 19, 2018

- 1753N

ASSEMBLY

DS1340U-18+

PRODUCTION

DS1340U-3+

PRODUCTION

DS1340U-3+T&R

PRODUCTION

May 22, 2018

- 1702N

ASSEMBLY

DS1340Z-18+

PRODUCTION

DS1340Z-3+

PRODUCTION

DS1340Z-3+T&R

PRODUCTION

Oct 30, 2020

- 1702R2

ASSEMBLY

DS1340Z-33+

PRODUCTION

DS1340Z-33+T&R

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Sep 19, 2018

- 1753N

arrow down

ASSEMBLY

DS1340U-18+

PRODUCTION

DS1340U-3+

PRODUCTION

DS1340U-3+T&R

PRODUCTION

May 22, 2018

- 1702N

arrow down

ASSEMBLY

DS1340Z-18+

PRODUCTION

DS1340Z-3+

PRODUCTION

DS1340Z-3+T&R

PRODUCTION

Oct 30, 2020

- 1702R2

arrow down

ASSEMBLY

DS1340Z-33+

PRODUCTION

DS1340Z-33+T&R

PRODUCTION

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