Fujitsu MB91460 Series Application Note page 13

Command PC to MCU
1 (0x01)
2 (0x02)
Address (4 bytes)
READ
Size (2 bytes)
1 (0x01)
3 (0x03)
Address (4 bytes)
WRITE Size (2 bytes)
Binary Dump
1 (0x01)
4 (0x04)
Address (4 bytes)
CALL
1 (0x01)
5 (0x05)
CHECKSUM
1 (0x01)
6 (0x06)
BAUDRATE
Baudrate (4 bytes)
© Fujitsu Microelectronics Europe GmbH
Serial Asynchronous Flash Programming
Chapter 1 Background Information
MCU to PC
241 (0xF1)
130 (0x82)
Binary Dump
CheckSum (2 bytes)
241 (0xF1)
131 (0x83)
CheckSum (2 bytes)
241 (0xF1)
132 (0x84)
Return Parameter
241 (0xF1)
133 (0x85)
CheckSum (2 bytes)
241 (0xF1)
134 (0x86)
Table 2: Internal bootloader functions
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Remark
Lo, MidLo, MidHi, Hi
Lo, Hi
Direct read and dump
Bootloader sends 16bit
checksum
Lo, MidLo, MidHi, Hi
Lo, Hi
Receive and store dump in
RAM
Bootloader sends 16bit
checksum
Lo, MidLo, MidHi, Hi
Calls specified Address and
waits for a return
The returned parameter in R4
will be echoed to the PC
MCU re-dumps 16bit
checksum (Lo, Hi) calculated
at last write or read operation
Lo, MidLo, MidHi, Hi
Initializes UART with new
baudrate value
MCU-AN-300012-E-V13