
Section 5 Exception Handling
R01UH0025EJ0300 Rev. 3.00
Page 95 of 1336
Sep 24, 2010
SH7261 Group
Section 5 Exception Handling
5.1
Overview
5.1.1
Types of Exception Handling and Priority
Exception handling is started by sources, such as resets, address errors, bus errors, register bank
errors, interrupts, and instructions. Table 5.1 shows their priorities. When several exception
handling sources occur at once, they are processed according to the priority shown.
Table 5.1
Types of Exception Handling and Priority Order
Type
Exception Handling
Priority
Power-on reset
Reset
Manual reset
Address
error
CPU address error
Bus error
Instructions FPU exception
Integer division exception (division by zero)
Integer division exception (overflow)
Bank underflow
Register
bank error
Bank overflow
Interrupts
NMI
User break
H-UDI
IRQ
PINT
High
Low