The UPD78916x microcontroller is 8-bit 78K0S core microcontroller for general purpose.

Key Features:

  • Operating voltage:
    • VDD = 1.8 to 5.5 V (µPD78916x, 78916x(A))
    • VDD = 4.5 to 5.5 V (µPD78916x(A1), 78916x(A2))


  • Max. frequency: 10 MHz
  • ROM capacities: 16 KB mask ROM
  • RAM capacities: 512 bytes
  • 44-pin plastic LQFP and 48-pin TQFP package
  • Minimum instruction execution time changeable from high-speed (0.2 µs: Main system clock 10.0 MHz operationNote) to ultra-low speed (122 µs: Subsystem clock 32.768 kHz operation)
  • I/O ports: 20
  • Serial interface: 1 channel
    • 3-wire serial I/O mode/UART mode selectable


  • 8-bit resolution A/D converter: 4 channels
  • Timers: 6 channels
    • 16-bit timer: 1 channel
    • 8-bit timer/event counter: 2 channel
    • 8-bit timer: 1 channel
    • Watch timer: 1 channel
    • Watchdog timer: 1 channel


  • Multiplier: 8 bits x 8 bits = 16 bits
  • Vectored interrupt sources: 10
  • Operating ambient temperature
    • TA = -40 to + 85°C (µPD78916x, 78916x(A))
    • TA = -40 to +110°C (µPD78916x(A1))
    • TA = -40 to +125°C (µPD78916x(A2))


Pin Count / Memory Size Lineup:

Below you will find information to support the development of your application.
You can find an explanation of orderable part numbers here.


Resources for Software and Hardware

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e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
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Video Watch videos related to this product.


Hardware Design Support

Title Description
Characteristics data Information on observed values. Please use this as reference data when developing your set.


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