Rev. 5.00, 12/03, page 669 of 1088
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.
<User MAT>
<User boot MAT>
Address H'000000
Address H'07FFFF
Address H'000000
Address H'001FFF
512 kbytes
8 kbytes
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.
17.22.6
Block Division
The user MAT is divided into 64 kbytes (seven blocks), 32 kbytes (one block), and 4 kbytes (eight
blocks) as shown in figure 17-63. The user MAT can be erased in this divided-block units and the
erase-block number of EB0 to EB15 is specified when erasing.
The RAM emulation can be performed in the eight blocks of 4 kbytes.
Summary of Contents for H8S/2318 series
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