Datasheet

Section 17 ROM
Rev.7.00 Feb. 14, 2007 page 690 of 1108
REJ09B0089-0700
17.22.4 Mode Comparison
The comparison table of programming and erasing related items about boot mode, user program
mode, user boot mode, and PROM mode is shown in table 17.46.
Table 17.46 Comparison of Programming Modes
Boot mode
User program
mode User boot mode PROM mode
Programming/
Erasing
Environment
On-board
programming
On-board
programming
On-board
programming
On-board
programming
Programming/
Erasing Enable
MAT
User MAT
User boot MAT
User MAT User MAT User MAT
User boot MAT
Program/Erase
Control
Command method Programming/
Erasing Interface
Programming/
Erasing Interface
Command method
All Erasure (Automatic) (Automatic)
Block Division
Erasure
*
1
×
Program Data
Transfer
From host via SCI From optional
device via RAM
From optional
device via RAM
Via programmer
RAM Emulation × × ×
Reset Initiation
MAT
Embedded
program storage
MAT
User MAT User boot MAT
*
2
—
Transition to User
Mode
Mode setting
change and reset
FLSHE bit setting
change
Mode setting
change and reset
—
Notes: 1. All-erasure is performed. After that, the specified block can be erased.
2. Initiation starts from the embedded program storage MAT. After checking the flash-
memory related registers, initiation starts from the reset vector of the user MAT.
• The user boot MAT can be programmed or erased only in boot mode and PROM mode.
• The user MAT and user boot MAT are erased in boot mode. Then, the user MAT and user boot
MAT can be programmed by means of the command method. However, the contents of the
MAT cannot be read until this state.
Only user boot MAT is programmed and the user MAT is programmed in user boot mode or
only user MAT is programmed because user boot mode is not used.
• The boot operation of the optional interface can be performed by the mode pin setting different
from user program mode in user boot mode.