User Program Mode; Figure 19.6 Programming/Erasing Flowchart Example In User Program Mode; Table 19.6 System Clock Frequencies For Which Automatic Adjustment Of Lsi Bit Rate Is Possible - Renesas H8S/2368 Series Hardware Manual

Table 19.6 System Clock Frequencies for which Automatic Adjustment of LSI Bit Rate is
Possible
Host Bit Rate
19,200 bps
9,600 bps
19.6.2

User Program Mode

On-board programming/erasing of an individual flash memory block can also be performed in user
program mode by branching to a user program/erase program. The user must set branching
conditions and provide on-board means of supplying programming data. The flash memory must
contain the program/erase program or a program which provides the program/erase program from
external memory. Because the flash memory itself cannot be read during programming/erasing,
transfer the program/erase program to on-chip RAM, as like in boot mode. Figure 19.6 shows a
sample procedure for programming/erasing in user program mode. Prepare a program/erase
program in accordance with the description in section 19.8, Flash Memory Programming/Erasing.
Transfer user program/erase control
Branch to user program/erase control
Execute user program/erase control
program (flash memory programming)
Branch to flash memory application

Figure 19.6 Programming/Erasing Flowchart Example in User Program Mode

System Clock Frequency Range of LSI
8 to 25 MHz
8 to 25 MHz
Reset-start
No
Program/erase?
Yes
program to RAM
program in RAM
program
Branch to flash memory application
program
Rev. 2.00, 05/03, page 661 of 820