The UPD78911xA microcontroller is 8-bit 78K0S core microcontroller for general purpose.


Main Solutions

Key Features:

  • Operating voltage:
    • VDD = 1.8 to 5.5 V (µPD78F9116A, 78F9116B, 78F9116B(A))
    • VDD = 4.5 to 5.5 V (µPD78F9116B(A1))


  • Max. frequency: 10 MHz
  • ROM capacities: 16 KB flash memory
  • RAM capacities: 256 bytes
  • 30-pin plastic SSOP package
  • System clock: Crystal/ceramic oscillation
  • Minimum instruction execution times switchable between high speed (0.2 µs) and low speed (0.8 µs) (system clock: 10.0 MHz)
  • I/O ports: 20
  • Serial interface: 1 channel
    • 3-wire serial I/O mode/UART mode selectable


  • 10-bit resolution A/D converter: 4 channels
  • Timers: 3 channels? 16-bit timer: 1 channel? 8-bit timer/event counter: 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 (µPD78911xA, 78911xA(A), 78F9116A, 78F9116B, 78F9116B(A))
    • TA = -40 to +105°C (µPD78F9116B(A1))
    • TA = -40 to +110°C (µPD78911xA(A1))
    • TA = -40 to +125°C (µPD78911xA(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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