D12320VF25V Datasheet, PDF (725/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
17.22.5 Flash MAT Configuration
This LSI's flash memory is configured by the 512-kbyte user MAT and 8-kbyte user boot 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 if it is in ROM valid mode. However,
the user boot MAT can be programmed only in boot mode and PROM mode.
Address H'000000
<User MAT>
<User boot MAT>
Address H'000000
Address H'001FFF
8 kbytes
512 kbytes
Address H'07FFFF
Figure 17.62 Flash Memory Configuration
The user MAT and user boot MAT have different memory sizes. Do not access a user boot MAT
that is 8 kbytes or more. When a user boot MAT exceeding 8 kbytes is read from, an undefined
value is read.
Rev.7.00 Feb. 14, 2007 page 691 of 1108
REJ09B0089-0700