Back to Know-How on Development for FR Family
1. Flash serial writing
Our MCU can be programmed with two serial, and CAN MCU can be programmed with further one serial.
The detailed is as following.
Program with FLASH serial writer for using SIO
FUJITSU Standard Serial Programming (W/E)
System configuration
Writing time
| Items | Time | Remarks |
| ERASE | approx. 12s |
device: MB91F355A FLASH size: 512KB Target internal frequency: 12.5MHz transmission speed: 1.25Mbps |
| BLANK CHECK | approx. 3s | |
| PROGRAM/SUM VERIFY | approx. 17s | |
| E.P.R | approx. 27s |
Program with PC serial programming for using UART
FUJITSU PC Serial Programming (W/E)
Writing time of PC Serial Programming
| Items | Time | Remarks |
| PROGRAM+VERIFY | Approx. 60s |
Device: MB91F355A FLASH size: 512KB Target internal frequency: 12.5MHz |
(Note) The frequency of the crystal oscillator that can be specified for each type of microcontroller is limited.
(Note) Regarding compatible microcontroller of PC serial writer, please contact Fujitsu.
Program with FLASH serial via CAN
To program with serial writer (e.g. YDC products) via CAN to FLASH MCU is supported.
At first of all, boot program (possible to get from YDC) is needed to be programmed already to FLASH MCU, but it can be programmed
to FLASH MCU via CAN by it.
