H8S-2639 Datasheet, PDF (838/1547 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer

Section 21A ROM (H8S/2636 Group)
The memory map of on-chip ROM is shown in figure 21A-17
Addresses in
MCU mode
H'000000
Addresses in
programmer mode
H'00000
On-chip ROM space
(128 kbytes)
H'01FFFF
H'1FFFF
Figure 21A-17 On-Chip ROM Memory Map
21A.13.2 Programmer Mode Operation
Table 21A-15 shows how the different operating modes are set when using programmer mode,
and table 21A-16 lists the commands used in programmer mode. Details of each mode are given
below.
• Memory Read Mode
Memory read mode supports byte reads.
• Auto-Program Mode
Auto-program mode supports programming of 128 bytes at a time. Status polling is used to
confirm the end of auto-programming.
• Auto-Erase Mode
Auto-erase mode supports automatic erasing of the entire flash memory. Status polling is used
to confirm the end of auto-programming.
• Status Read Mode
Status polling is used for auto-programming and auto-erasing, and normal termination can be
confirmed by reading the I/O6 signal. In status read mode, error information is output if an
error occurs.
Rev. 6.00 Feb 22, 2005 page 778 of 1484
REJ09B0103-0600