The UPD78947x Group is supported only for the customers who have already adopted any of the products. For new adoption, please consider other products such as RL78/L13 Group.

Main Solutions

Key Features:

  • Operating voltage: VDD = 1.8 to 5.5 V
  • Max. frequency: 5 MHz
  • ROM capacities: 24 KB to 48 KB mask ROM
  • RAM capacities: 768 bytes to 1.5 KB
  • 80-pin plastic TQFP, QFP package
  • Minimum instruction execution time can be selected from high speed (0.4 µs: @5.0 MHz operation with main system clock), low speed (1.6 µs: @5.0 MHz operation with main system clock), and ultra low speed (122 µs: @32.768 kHz operation with subsystem clock)
  • A circuit to multiply the subsystem clock by 4 is selectable (15.26 µs: @131 kHz operation: 32.768 kHz subsystem clock x 4)
  • I/O ports: 45 (N-ch open-drain: 4)
  • Timer: 6 channels
  • Serial interface: 2 channels
  • 8-bit resolution A/D converter: 8 channels
  • LCD controller/driver (external resistance division method) Segment signals: 28, common signals: 4
  • On-chip multiplier: 8 bits x 8 bits = 16 bits
  • On-chip infrared remote control reception function
  • On-chip key return signal detector


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

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.
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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