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Section 6 Exception Handling
R01UH0134EJ0400 Rev. 4.00 Page 131 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Section 6 Exception Handling
6.1 Overview
6.1.1 Types of Exception Handling and Priority
Exception handling is started by sources, such as resets, address errors, register bank errors,
interrupts, and instructions. Table 6.1 shows their priorities. When several exception handling
sources occur at once, they are processed according to the priority shown.
Table 6.1 Types of Exception Handling and Priority Order
Type Exception Handling Priority
Reset Power-on reset High
Manual reset
Address
error
CPU address error
DMA address error
Instruction FPU exception
Integer division exception (division by zero)
Integer division exception (overflow)
Register
bank error
Bank underflow
Bank overflow
Interrupt NMI
User debugging interface
IRQ
PINT Low