HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 970

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 21 Flash Memory (0.18-μm F-ZTAT Version)
12. Programming
13. The return value in the programming program, FPFR (general register R0L) is determined.
14. Determine whether programming of the necessary data has finished.
15. Execution of Programming Finished Processing
Rev.7.00 Mar. 18, 2009 page 902 of 1136
REJ09B0109-0700
There is an entry point of the programming program in the area from the start address specified
by FTDAR + 16 bytes of the on-chip RAM. The subroutine is called and programming is
executed by using the following steps.
MOV.L
JSR
NOP
⎯ The general registers other than ER0 and ER1 are held in the programming program.
⎯ R0L is a return value of the FPFR parameter.
⎯ Since the stack area is used in the programming program, a stack area of a maximum 128
If more than 128 bytes of data are to be programmed, specify FMPAR and FMPDR in 128-
byte units, and repeat steps 12 to 14. Increment the programming destination address by 128
bytes and update the programming data pointer correctly. If an address which has already been
programmed is written to again, not only will a programming error occur, but also flash
memory will be damaged.
The entry point of the programming library is in the area beginning at the download
destination start address specified by FTDAR plus 16 bytes. Subroutine calls should therefore
be performed as follows.
MOV.L
MOV.L
MOV.L
JSR
⎯ Data is stored in a general register other than ER0, ER1 by the programming finished
⎯ R0L is the return value of the FPFR parameter.
⎯ The programming finished program uses the stack area, so a maximum 128-byte stack area
bytes must be allocated in RAM
program.
should be reserved in RAM beforehand.
#DLTOP+16,ER2;
@ER2;
#H'F0F0F0F0,ER0;
#H'0F0F0F0F,ER2;
#DLTOP+16,ER2;
@ER2;
Set entry address to ER2
Call programming routine
Set entry address to ER2
Call programming finished routine