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BQ4847YMT The BQ4847YMT is a Clock/Calendar real-time clock module from Texas Instruments with integrated battery and crystal. It offers parallel interface, alarm, daylight savings, leap year, supervisor, and watchdog timer features.
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BQ4847YMT

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Mfr Name: Texas Instruments
Texas Instruments
The BQ4847YMT is a Clock/Calendar real-time clock module from Texas Instruments with integrated battery and crystal. It offers parallel interface, alarm, daylight savings, leap year, supervisor, and watchdog timer features.
✓ Total Stock: 153 pcs

BQ4847YMT Available from 1 distributor

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BQ4847YMT Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Date Format
Features
Interface
Mounting Type
Operating Temperature
Reset Timeout
SVHC Present
Supplier Device Package
Time Format
Type
Voltage
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BQ4847YMT Description

Short technical summary and product information.

The Texas Instruments BQ4847YMT is a real-time clock (RTC) module that combines a time-of-day clock, 100-year calendar, CPU supervisor, integrated battery (130mAh), and crystal in a single 28-pin DIP module. It operates from a 2.3V to 4V supply and provides a clock accuracy of ±1 minute per month. The RTC supports HH:MM:SS (12/24 hr) time format and YY-MM-DD-dd date format.

 

Key features include an alarm function, daylight savings adjustment, leap year correction, a supervisor circuit with reset timeout, and a programmable watchdog timer. The device generates microprocessor reset and power-fail interrupt warnings. Backup current is less than 500nA, ensuring long battery life during power loss.

 

The module is housed in a 28-DIP through-hole package (0.61", 15.49mm) and operates over a 0°C to 70°C temperature range. Typical applications include fax machines, copiers, industrial control systems, point-of-sale terminals, data loggers, and computers.

BQ4847YMT Quick Information

Product Type: Real-Time Clock Module
Canonical Name: BQ4847YMT Real-Time Clock Module by Texas Instruments
Subcategory: Real Time Clocks

BQ4847YMT Compliance

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

BQ4847YMT Features

  • Alarm, daylight savings, leap year functions.
  • Supervisor and programmable watchdog timer.
  • Parallel interface for time/date register access.
  • ±1 minute per month clock accuracy.
  • 130mAh integrated battery backup.

BQ4847YMT Applications

  • Ideal for fax machines and copiers.
  • Suitable for industrial control systems.
  • Used in point-of-sale terminals.
  • Data logger and computer applications.

BQ4847YMT FAQs

6 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the BQ4847YMT?

The supply voltage range is 2.3V to 4V.

What interface does the BQ4847YMT use?

It uses a parallel interface.

What is the operating temperature range?

The operating temperature range is 0°C to 70°C.

Is the BQ4847YMT RoHS compliant?

RoHS status is listed as RoHS3 Compliant, but this is unverified low-confidence data.

What is the clock accuracy of the BQ4847YMT?

The clock accuracy is ±1 minute per month.

What package does the BQ4847YMT come in?

It comes in a 28-DIP Module (0.61", 15.49mm) through-hole package.

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