SH7280 Datasheet, PDF (1417/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 26 Flash Memory
• The user boot MAT can be programmed or erased only in boot mode and programmer mode.
• The user MAT and user boot MAT are all 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.
• In user boot mode, the boot operation of the optional interface can be performed by a mode pin
setting different from user program mode.
26.2.4 Flash Memory Configuration
This LSI's flash memory is configured by the 128-Kbyte, 256-Kbyte (SH7243), 512-Kbyte, 768-
Kbyte (SH7286, SH7285), or 1-Mbyte (SH7286) user MAT and 12-Kbyte user boot MAT
(SH7286, SH7285).
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 the 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 programmer mode.
Address H'00000000
<User MAT>
<User Boot MAT>*
Address H'00000000
Address H'00002FFF
12 Kbytes
Address
H'0003FFFF (for 256-Kbyte MAT)
H'0007FFFF (for 512-Kbyte MAT)
H'000BFFFF (for 768-Kbyte MAT)
H'000FFFFF (for 1-Mbyte MAT)
Note: * Only available in the SH7285 and SH7286
Figure 26.3 Flash Memory Configuration
The user MAT and user boot MAT have different memory sizes. Do not access a user boot MAT
that is 12 Kbytes or more. When a user boot MAT exceeding 12 Kbytes is read from, an undefined
value is read.
Rev. 1.00 Jun. 26, 2008 Page 1387 of 1692
REJ09B0393-0100