Differences Between Boot Mode And User Program Mode - Renesas F-ZTAT H8 Series Hardware Manual

Section 18 ROM
Flash memory
Programming data
Application program
Figure 18.4 Writing Overlap RAM Data in User Program Mode
18.2.5

Differences between Boot Mode and User Program Mode

Item
Total erase
Block erase
Programming control program *
Note: * To be provided by the user, in accordance with the recommended algorithm.
Rev. 3.00 Mar 21, 2006 page 562 of 814
REJ09B0302-0300
Boot Mode
Yes
No
Boot program is initiated,
and programming control
program is transferred from
host to on-chip RAM, and
executed there.
SCI
RAM
Overlap RAM
(programming data)
Programming control
program execution state
User Program Mode
Yes
Yes
Program that controls
programming program in flash
memory is executed. Program
should be written beforehand in
PROM mode and boot mode.