Datasheet

Section 21 Flash Memory
Rev. 2.00 Sep. 28, 2009 Page 647 of 870
REJ09B0429-0200
21.1.3 Flash Memory MAT Configuration
This LSI’s flash memory is configured by the 16-Kbyte user boot MAT and 512-Kbyte user MAT.
The start address is allocated to the same address in the user MAT and user boot MAT. Therefore,
when the program execution or data access is performed between two MATs, the MAT must be
switched by using FMATS.
The user MAT or user boot MAT can be read in all modes. However, the user boot MAT can be
programmed only in boot mode and programmer mode.
<User MAT> <User Boot MAT>
Address H'000000
Address H'07FFFF
Address H'000000
Address H'003FFF
512 Kbytes
16 Kbytes
Figure 21.3 Flash Memory Configuration
The size of the user MAT is different from that of the user boot MAT. An address which exceeds
the size of the 16-Kbyte user boot MAT should not be accessed. If the attempt is made, data is
read as undefined value.