SH7280 Datasheet, PDF (1519/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 27 On-Chip RAM
Section 27 On-Chip RAM
This LSI has an on-chip RAM module which can be used to store instructions or data.
On-chip RAM operation and write access to the RAM can be enabled or disabled through the
RAM enable bits and RAM write enable bits.
27.1 Features
• Pages
SH7243: SH72433 One page (pages 0), SH72434 Two pages (pages 0 and 1)
SH7285: SH72855 Three pages (pages 0 to 2), SH72856 Four pages (pages 0 to 3)
SH7286: Four pages (pages 0 to 3)
• Memory map
The on-chip RAM is located in the address spaces shown in tables 27.1 and 27.2.
Table 27.1 On-Chip RAM Address Spaces (SH7286 and SH7285)
Page
Page 0
Page 1
Page 2
Page 3
Address
H'FFF80000 to H'FFF81FFF
H'FFF82000 to H'FFF83FFF
H'FFF84000 to H'FFF85FFF
H'FFF86000 to H'FFF87FFF
Table 27.2 On-Chip RAM Address Spaces (SH7243)
Page
Page 0
Page 1
Address
H'FFF80000 to H'FFF81FFF
H'FFF82000 to H'FFF82FFF
Rev. 1.00 Jun. 26, 2008 Page 1489 of 1692
REJ09B0393-0100