HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 119
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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4.1
As table 4.1 indicates, exception handling may be caused by a reset, interrupt, direct transition, or
trap instruction. Exception handling is prioritized as shown in table 4.1. If two or more exceptions
occur simultaneously, they are accepted and processed in order of priority.
Table 4.1
Priority
High
Low
Exception Handling Types and Priority
Exception Type
Reset
Interrupt
Direct transition
Trap instruction
Exception Types and Priority
Section 4 Exception Handling
Start of Exception Handling
Starts immediately after a low-to-high transition of the 5(6
pin, or when the watchdog timer overflows.
handling ends, if an interrupt request has been issued.
Interrupt detection is not performed on completion of ANDC,
ORC, XORC, or LDC instruction execution, or on
completion of reset exception handling.
SLEEP instruction execution.
Started by execution of a trap (TRAPA) instruction. Trap
instruction exception handling requests are accepted at all
times in program execution state.
Starts when execution of the current instruction or exception
Starts when a direction transition occurs as the result of
Rev. 2.0, 08/02, page 79 of 788
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