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BQ3287EA Status: ACTIVE

RTC Module w 242x8 NVSRAM Alarm Wake-up RAM Clear Input on EA Version


      
         
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Datasheet

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 BQ3287 BQ3287A BQ3287E BQ3287EABQ4287 
Supply Voltage(V)5  5  5  5  5  
Bus InterfaceMultiplexed  Multiplexed  Multiplexed  Multiplexed  Multiplexed  
Memory Density(Kb)0.114  0.114  0.242  0.242  0.114  
Operating Temp Range(Celsius)-20 to 70,0 to 70  -20 to 70,0 to 70  0 to 70  0 to 70  0 to 70  
Pin/Package24DIP MODULE  24DIP MODULE  24DIP MODULE  24DIP MODULE  24DIP MODULE  
Approx. Price (US$) 4.20 | 1ku   4.20 | 1ku   4.20 | 1ku   4.20 | 1ku   5.40 | 1ku  
RTC Bytes14  14  14  14  14  
 SamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ3285E: RTC IC with 242x8 NVSRAM Alarm Wake-up
  • BQ4832Y: RTC Module W 32Kx8 NVSRAM Watchdog Timer, uP Reset, Interrupts and Battery Low Warning
  • BQ4842Y: RTC Module With 128Kx8 NVSRAM, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning
  • MSP430F2013: 16-bit Ultra-Low-Power Microcontroller, 2kB Flash, 128B RAM, 16-Bit Sigma-Delta A/D, USI for SPI/I2C

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Product Information

Features

  • Direct clock/calendar replacement for IBM\xAE AT-compatible computers and other applications
  • Functionally compatible with the DS1287/DS1287A and MC146818A/ MC146818B
  • 242 bytes of general nonvolatile storage
  • Provides a 32.768kHz output for power management
  • System wake-up capability-alarm interrupt active in battery-backup mode
  • Integral lithium cell and crystal
  • 160 ns cycle time allows fast bus operation
  • 14 bytes for clock/calendar and control
  • Time of day in seconds, minutes, and hours
    • 12- or 24-hour format
    • Optional daylight saving adjustment
  • Calendar in day of the week, day of the month, months, and years with automatic leap year adjustment
  • Programmable square wave output
  • Three individually maskable interrupt event flags:
    • Periodic rates from 122us to 500ms
    • Time-of-day alarm once per second to once per day
    • End-of-clock update cycle
  • Better than one minute per month clock accuracy

Description

The CMOS bq3287E/bq3287EA is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. Other features include three maskable interrupt sources, square-wave output, and 242 bytes of general nonvolatile storage. A 32.768kHz output is available for sustaining power-management activities. Wake-up capability is provided by an alarm interrupt, which is active in battery-backup mode. The bq3287EA version is identical to the bq3287E, with the addition of the RAM clear input.

The bq3287E is a fully compatible real-time clock for IBM AT-compatible computers and other applications. The bq3287E write-protects the clock, calendar, and storage registers during power failure.

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Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsSamples
BQ3287EAMTACTIVE0 to 704.20 | 1kuDIP MODULE (MT) | 24 15 Download CAD Format for this Symbol

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:16 PM GMT, 26 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 12 WeeksBQ3287EAMT
AmericasRochester Electronics 29
AsiaWPI 100
WorldwideDigiKey 101
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
BQ3287EAMT RoHS Compliant Pb-Free (RoHS) Call TI N/A for Pkg TypeViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BQ3287EA Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
BQ3285E RTC IC with 242x8 NVSRAM Alarm Wake-up CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ4832Y RTC Module W 32Kx8 NVSRAM Watchdog Timer, uP Reset, Interrupts and Battery Low Warning CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ4842Y RTC Module With 128Kx8 NVSRAM, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ3287E RTC Module With 242x8 NVSRAM, Alarm Wake-up, RAM Clear Input on EA Version CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ4850Y RTC Module With 512Kx8 NVSRAM CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ4802Y Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 5V Vcc CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ4285E RTC IC With 114x8 NVSRAM and NVSRAM Control, Alarm Wake-up 3V Op on L Version CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ3287A RTC Module With 114x8 NVSRAM, RAM Clear Input on A Version CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ4822Y RTC Module With 8Kx8 NVSRAM Watchdog Timer uP Reset Interrupts and Battery Low Warning CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
BQ32000 Serial RTC CLOCKS AND TIMERS-REAL-TIME CLOCKS TI customers also evaluated this product.
MSP430F2013 16-bit Ultra-Low-Power Microcontroller, 2kB Flash, 128B RAM, 16-Bit Sigma-Delta A/D, USI for SPI/I2C MSP430™16-BIT ULTRA-LOW POWER MCUS-2XX 16MHZ SERIES TI customers also evaluated this product.

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