BQ3285LDSSTR The BQ3285LDSSTR is a real-time clock/calendar IC from Texas Instruments. It operates from 2.7V to 3.6V, features 242 bytes of nonvolatile storage, and comes in a surface-mount 24-SSOP package.
Mfr Part #:

BQ3285LDSSTR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The BQ3285LDSSTR is a real-time clock/calendar IC from Texas Instruments. It operates from 2.7V to 3.6V, features 242 bytes of nonvolatile storage, and comes in a surface-mount 24-SSOP package.
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BQ3285LDSSTR Available from 2 distributors

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BQ3285LDSSTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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BQ3285LDSSTR Description

Short technical summary and product information.

The Texas Instruments BQ3285LDSSTR is a low-power real-time clock (RTC) and calendar peripheral designed for IBM AT-compatible computers and other systems. It provides timekeeping in 12/24-hour format and calendar functions including day of week, day, month, year, and automatic leap-year adjustment. The device supports alarm interrupt, daylight saving adjustment, and offers a programmable square-wave output.

 

Key specifications include a supply voltage range of 2.7V to 3.6V (typical 3.0V) with a typical supply current of 100µA at 3V. It features 242 bytes of general nonvolatile storage (NVSRAM) for user data, and a parallel interface supporting Intel or Motorola bus timing. The RTC includes three maskable interrupt sources: periodic rates, time-of-day alarm, and end-of-clock update cycle.

 

The BQ3285LDSSTR is packaged in a lead-free 24-pin SSOP (0.154 inch width) for surface-mount applications. It is available in tape and reel packaging. The device operates over a commercial temperature range of 0°C to 70°C. According to the manufacturer page, it is RoHS3 compliant.

BQ3285LDSSTR Quick Information

Product Type: Real-Time Clock (RTC) IC
Series: BQ3285L
Canonical Name: Texas Instruments BQ3285LDSSTR Real-Time Clock/Calendar
Subcategory: Clock/Calendar

BQ3285LDSSTR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Lead Free

BQ3285LDSSTR Features

  • Real-time clock/calendar with alarm function.
  • Operates from 2.7V to 3.6V supply.
  • 242 bytes of nonvolatile storage.
  • Parallel interface for easy integration.
  • Surface-mount 24-SSOP package.

BQ3285LDSSTR Applications

  • Used in IBM AT-compatible computers.
  • Suitable for power management systems.
  • Ideal for embedded systems requiring timekeeping.
  • Can be used in industrial automation systems.

BQ3285LDSSTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the BQ3285LDSSTR?

2.7V to 3.6V, with a typical supply of 3.0V.

What package is the BQ3285LDSSTR available in?

24-SSOP (0.154 inch width, 3.90mm width) for surface-mount applications.

What is the operating temperature range of the BQ3285LDSSTR?

0°C to 70°C.

Is the BQ3285LDSSTR RoHS compliant?

According to the manufacturer page, it is RoHS3 compliant. However, this status is unverified and has low confidence.

How much memory does the BQ3285LDSSTR have?

242 bytes of general nonvolatile storage.

What interface does the BQ3285LDSSTR use?

Parallel interface with selectable Intel or Motorola bus timing.

Does the BQ3285LDSSTR have an alarm feature?

Yes, it includes an alarm interrupt that is active in battery-backup mode.

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