HD64F2168 Datasheet, PDF (654/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

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
Programmer
User boot mode 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
Block division
erasure
(Automatic)
*¹
(Automatic)
×
Program data
transfer
Reset initiation
MAT
From host via SCI Via optional device Via optional device Via programmer
Embedded
program storage
MAT
User MAT
User boot MAT*² 
Transition to user Changing mode Changing FLSHE Changing mode 
mode
setting and reset bit and FWE pin 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 the optional interface can be performed by the mode pin setting different
from user program mode in user boot mode.
Rev. 3.00, 03/04, page 614 of 830