BQ4845 - Brand New BQ Real-time Clocks (RTC)
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Product Details
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General Description
The CMOS bq4285 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 114 bytes of general nonvolatile storage.
Features
➤ Direct clock/calendar replacement for IBM® AT-compatible computers and other applications
➤ Functionally compatible with the DS1285
- Closely matches MC146818A pin configuration
➤ 114 bytes of general nonvolatile storage
➤ Automatic backup and writeprotect control to external SRAM
➤ 160 ns cycle time allows fast bus operation
➤ Selectable Intel or Motorola bus timing (PLCC), Intel bus timing (DIP and SOIC)
➤ Less than 0.5 µA load under battery operation
➤ 14 bytes for clock/calendar and control
➤ Calendar in day of the week, day of the month, months, and years, with automatic leap-year adjustment
➤ Time of day in seconds, minutes, and hours
- 12- or 24-hour format
- Optional daylight saving adjustment
➤ BCD or binary format for clock and calendar data
➤ Programmable square wave output
➤ Three individually maskable interrupt event flags:
- Periodic rates from 122 µs to 500 ms
- Time-of-day alarm once per second to once per day
- End-of-clock update cycle
➤ 24-pin plastic DIP or SOIC -
Similar parts: 1405 , Click to view
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
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Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
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Popular parts of the same kind
- Datasheet: Download BQ4845
- Chipdatas Part: CD93-BQ4845
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 08:15 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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The fee is charged according to the rule of PayPal.
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The fee is charged according to the rule of PayPal.
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Western Union charge US$0.00 banking fee.
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We recommend to use bank transfer for large orders to save on handling fees.
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DHL(www.dhl.com)
$40 limited time offer. -
UPS(www.ups.com)
$40 limited time offer. -
FedEx(www.fedex.com)
$40 limited time offer. -
Registered Mail(www.singpost.com)
Free shipping without minimum order.
