Flash Memory Mat Configuration - Renesas H8S Family Hardware Manual

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.

Address H'000000

Address H'07FFFF

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.

Block Division

The user MAT is divided into seven 64-Kbyte blocks, one 32-Kbyte block, and eight 4-Kbyte

blocks as shown in figure 25.4. The user MAT can be erased in this divided-block units, and the

erase-block number of EB0 to EB15 is specified when erasing. Programming is performed in 128-

byte units starting at the addresses whose lowest-order byte is H'00 or H'80.

Figure 25.3 Flash Memory Configuration

Address H'000000

Address H'003FFF

Rev. 1.00 Mar. 12, 2008 Page 921 of 1178

Section 25 Flash Memory

REJ09B0403-0100