As a CPU board usable in connection with the on-chip debugging emulator E2, E2 Lite, E1(discontinued product), this product achieves simple and easy evaluation of the target MCU.

Information on the discontinuation of E1 emulator production
We have already discontinued production of the E1 emulator due to components of the product having reached their EOL (end of life, i.e. end of production). Please click on the following link to confirm the details.
[Notification] End of Life (EOL) Notice for E1 Emulator (PDF | English, 日本語)


  • Built-in RL78/G14 (R5F104PJAFB).
  • A 20 MHz oscillator mounted as main clock, high-speed operation enabled (@ 2.7 to 5.5 V).
  • Equipped with universal area (2.54 mm pitch).
  • Supports both flash memory programming and on-chip debugging (using TOOL0 pin).
  • Highly extendable; peripheral board connectors are equipped with microcontroller pins.
  • Lead-free (Pb-free) product.



Type Title Date
Application Note PDF 794 KB 日本語
Application Note PDF 798 KB 日本語
Application Note PDF 772 KB 日本語
Application Note PDF 1.21 MB 日本語
Application Note PDF 1.05 MB 日本語 , 简体中文
Application Note PDF 778 KB 日本語
Application Note PDF 834 KB 日本語
Application Note PDF 748 KB 日本語
Manual - Development Tools PDF 241 KB
9 items

Design & Development

Sample Code