SH7243 datasheet(125/1726 Pages) RENESAS

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Section 5 Exception Handling

Rev. 1.00 Jun. 26, 2008 Page 95 of 1692

REJ09B0393-0100

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, 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

CPU address error

Address

error

DMAC address error

Integer division exception (division by zero)

Instruction

Integer division exception (overflow)

Bank underflow

bank error

Bank overflow

NMI

User break

H-UDI

IRQ

A/D converter (ADC)

Controller area network (RCAN-ET)

Direct memory access controller (DMAC)

Compare match timer (CMT)

Bus state controller (BSC)

Watchdog timer (WDT)

USB function module (USB) DTC transfer

end

Interrupt

On-chip peripheral modules

Multi-function timer pulse unit 2 (MTU2)

High

Low

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