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Product Details
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Real-Time Clock plus RAM with Serial Interface CMOS
**TheMC68HC68T1 HCMOS Clock/RAM peripheral contains a real–time
clock/calendar,a 32x 8 static RAM, and a synchronous, serial, three–wire interface for communication with a microcontroller or processor. Operating in a**
burstmode, successive Clock/RAM locations can be read or written using only asingle starting address. An on–chiposcillator allows acceptance of a selectable crystal frequency or the device can be programmed to accept a
50/60 Hz line input frequency.**• Full Clock Features — Seconds, Minutes, Hours (AM/PM), Day–of–Week,
Date, Month, Year (0 – 99), Auto Leap Year**
• 32–Byte General Purpose RAM
• Direct Interface to Motorola SPI and National MICROWIRESerial Data Ports
• Minimum Timekeeping Voltage: 2.2 V
• Burst Mode for Reading/Writing Successive Addresses in Clock/RAM
• Selectable Crystal or 50/60 Hz Line Input Frequency
• Clock Registers Utilize BCD Data
• Buffered Clock Output for Driving CPU Clock, Timer, Colon, or LCD Backplane
• Power–On Reset with First Time–Up Bit
• Freeze Circuit Eliminates Software Overhead During a Clock Read
• Three Independent Interrupt Modes — Alarm, Periodic, or Power–Down
• CPU Reset Output — Provides Orderly Power–Up/Power–Down
• Watchdog Circuit
• Pin–for–Pin Replacement for CDP68HC68T1
• Chip Complexity: 8500 FETs or 2125 Equivalent Gates
• Also See Application Notes ANE425 “Use of the MC68HC68T1 RTC with M6805 Microprocessor”, AN457 “Providing a Real–Time Clock for the MC68302”, and AN1065 “Use of the MC68HC68T1 Real–Time Clock with
Multiple Time Bases” -
Similar parts: 430483 , 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
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DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
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Popular parts of the same kind
- Datasheet: Download MC68HC68TI
- Chipdatas Part: CD94-MC68HC68TI
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 15:15 +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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