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The UPD78932x microcontroller is 8-bit 78K0S core microcontroller for LCD control applications.


Key Features:

  • Operating voltage: VDD = 1.8 to 5.5 V
  • Max. frequency: 5 MHz
  • ROM capacities: 4 KB to 16 KB mask ROM and 32 KB flash memory
  • RAM capacities: 256 bytes to 512 bytes
  • 52-pin plastic LQFP package
  • Main system clock: RC oscillation
  • Minimum instruction execution time can be changed from high-speed (0.4 µs: @ 5.0 MHz operation with main system clock) to ultra-low-speed (122 µs: @ 32.768 kHz operation with subsystem clock)
  • I/O ports: 21
  • Serial interface: 3-wire serial I/O mode 1 channel
  • Timer: 4 channels
    • 8-bit timer: 2 channels
    • Watch timer: 1 channel
    • Watchdog timer: 1 channel


  • LCD controller/driver Segment signals: 24, common signals: 4
  • Vectored interrupt sources: 9
  • On-chip power-on clear circuit (mask option for mask ROM versions)
  • Operating ambient temperature: TA = -40 to +85°C


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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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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