The UPD78F073x 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/G1C Group.

Main Solutions

Key Features:

  • Operating voltage: VDD = 4.0 to 5.5 V
  • Max. frequency: 16 MHz
  • ROM capacities: 16 KB flash memory
  • RAM capacities: Internal High-Speed RAM 1 KB / Internal Expansion RAM 1 KB
  • 30-pin plastic SSOP package
  • 78K0 CPU core
  • High speed instruction execution (0.125 µs: @ 16 MHz operation with high-speed system clock)
  • General-purpose register: 8 bits x 32 registers (8 bits x 8 registers x 4 banks)
  • On-chip USB function controller (USBF)
  • On-chip single-power-supply flash memory
  • Self-programming (with boot swap function)
  • On-chip debug function
  • On-chip power-on-clear (POC) circuit and low-voltage detector (LVI)
  • On-chip watchdog timer (operable with the internal low-speed oscillation clock)
  • I/O ports: 19 (N-ch open drain: 2)
  • Timer: 5 channels
    • 16-bit timer/event counter: 1 channel
    • 8-bit timer/event counter: 2 channels
    • 8-bit timer: 1 channel
    • Watchdog timer: 1 channel


  • Serial interface: 3 channels
    • UART: 1 channel
    • CSI: 1 channel
    • USB: 1 channel


  • 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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