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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
Programming/
On-board
Erasing
programming
Environment
Programming/
User MAT
Erasing Enable
User boot MAT
MAT
All Erasure
Block Division
Erasure
Program Data
From host via SCI From optional
Transfer
×
RAM Emulation
Reset Initiation
Embedded
MAT
program storage
MAT
Transition to User
Mode setting
Mode
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.
Rev. 5.00, 12/03, page 668 of 1088
User program
mode
On-board
programming
User MAT
(Automatic)
1
*
device via RAM
User MAT
FLSHE bit setting
change
User boot mode
PROM mode
On-board
On-board
programming
programming
User MAT
User MAT
User boot MAT
×
From optional
Via programmer
device via RAM
×
×
2
User boot MAT *
—
Mode setting
—
change and reset
(Automatic)
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