Datasheet

Section 22 Flash Memory
Page 1146 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Table 22.2 Overview of Flash Memory Programming Modes
On-board Programming Mode Off-board Mode
Item
User Programming
Mode Boot Mode Programmer Mode
Functional
overview
The user ROM is
programmed by the CPU
through execution of
software commands.
EW0 mode:
Programming can be
done from outside of the
flash memory.
The user ROM is programmed
through the on-chip SCI
interface.
Standard serial I/O mode 1:
Clock-synchronous serial I/O
Standard serial I/O mode 2:
Asynchronous serial I/O
The user ROM is
programmed through a
dedicated parallel
programmer.
Programmable
area
User ROM, data flash User ROM, data flash User ROM, data flash
Operating
mode
Single-chip mode, on-
chip ROM enabled
expanded mode (EW0
mode)
Boot mode Programmer mode
ROM
programmer
⎯ ⎯ Parallel programmer