Rev. 1.00, 09/03, page 528 of 704
20.1.2 Mode
Comparison
The comparison table of programming and erasing related items about boot mode, user program
mode, user boot mode, and programmer mode is shown in table 20.1.
Table 20.1 Comparison of Programming Modes
Boot mode
User program
mode
User boot mode
Programmer
mode
Programming/
erasing
environment
On-board On-board On-board PROM
programmer
Programming/
erasing enable
MAT
User MAT
User boot MAT
User MAT
User MAT
User MAT
User boot MAT
All erasure
(Automatic)
(Automatic)
Block division
erasure
*
1
×
Program data
transfer
From host via SCI Via any device
Via any device
Via programmer
Reset initiation
MAT
Embedded
program storage
MAT
User MAT
User boot MAT
*
2
Transition to user
mode
Changing mode
setting and reset
Changing FLSHE
bit and FWE pin
Changing mode
setting and reset
Notes: 1. All-erasure is performed. After that, the specified block can be erased.
2. Firstly, 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.
•
The user boot MAT can be programmed or erased only in boot mode and programmer 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 any interface can be performed by the mode pin setting different from
user program mode in user boot mode.
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