D12320VF25V Datasheet, PDF (724/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
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/
Programming/
Command method
Erasing Interface Erasing Interface
All Erasure
Block Division
Erasure
(Automatic)
*¹
(Automatic)
×
Program Data
Transfer
From host via SCI From optional
From optional
Via programmer
device via RAM device via RAM
RAM Emulation
Reset Initiation
MAT
×
Embedded
program storage
MAT
User MAT
×
×
User boot MAT^*2 —
Transition to User Mode setting
FLSHE bit setting Mode setting
—
Mode
change and reset change
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.7.00 Feb. 14, 2007 page 690 of 1108
REJ09B0089-0700