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Section 4 Boot Mode
R01UH0134EJ0400 Rev. 4.00 Page 109 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Section 4 Boot Mode
This LSI can be booted from the memory connected to the CS0 space, the NAND flash memory,
and the serial flash memory.
4.1 Features
Four boot modes
Boot mode 0: Boots the LSI from the memory connected to the CS0 space
Boot mode 1: Boots the LSI from the serial flash memory (high-speed communication)
Boot mode 2: Boots the LSI from the NAND flash memory
Boot mode 3: Boots the LSI from the serial flash memory (low-speed communication)
4.2 Boot Mode and Pin Function Setting
This LSI can determine the boot mode using external pins when RES is low. The external pin
settings for selecting the boot mode are shown in table 4.1.
Table 4.1 External Pin (MD_BOOT1 and MD_BOOT0) Settings and Corresponding Boot
Modes
MD_BOOT1 MD_BOOT0 Boot Mode
0 0 Boots the LSI from the memory connected to the CS0
space (boot mode 0).
0 1 Boots the LSI, through high-speed communication, from the
serial flash memory connected to channel 0 of the Renesas
serial peripheral interface (boot mode 1).
1 0 Boots the LSI from the NAND flash memory connected to
the NAND flash memory controller (boot mode 2).
1 1 Boots the LSI, through low-speed communication, from the
serial flash memory connected to channel 0 of the Renesas
serial peripheral interface (boot mode 3).