Datasheet

Rev. 2.00 Sep. 28, 2009 Page xviii of xl
REJ09B0452-0200
Item Page Revision (See Manual for Details)
24.1 Features 749 Description amended
• Two flash-memory MATs according to LSI initiation mode.
The on-chip flash memory has two memory spaces in the
same address space (hereafter referred to as memory
MATs). The mode setting at initiation determines which
memory MAT is initiated first.
The MAT can be switched by using the bank-switching
method after initiation.
− The user memory MAT is initiated at a power-on reset in
user mode: 160K bytes
− The user boot memory MAT is initiated at a power-on reset
in user boot mode: 8K bytes
• Three on-board programming modes
Boot mode: Using the on-chip SCI-1, the user MAT can be
programmed/erased. In boot mode, the bit rate between the
host and this LSI can be adjusted automatically.
User program mode: Using a desired interface, the user
MAT can be programmed/erased.
User boot mode: The User boot program of The optional
interface can be made and The User MAT can be
programmed.
24.2 Mode Transition
Diagram
Table 24.1 Differences
between Boot Mode,
User Program Mode,
and Programmer Mode
751 Note replaced
Notes: 2. First, the reset vector is fetched from the embedded
program storage MAT. After the flash memory
related registers are checked, the reset vector is
fetched from the user boot MAT.
752 Description amended
• The user boot MAT can be programmed or erased only in
boot mode and programmer mode.
• In boot mode, the user boot MAT are totally erased. Then,
the user MAT or user boot MAT can be programmed by
means of commands. Note that the contents of the MAT
cannot be read until this state.
Boot mode can be used for programming only the boot MAT
and then programming the user MAT in user boot mode.
Another way is to program only the user MAT since user boot
mode is not used.
• In user boot mode, boot operation of the optional interface
can be performed with mode pin settings different from those in
user program mode.