h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 135
h8s-2161b
Manufacturer Part Number
h8s-2161b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2161B.pdf
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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 RES
pin, or when the watchdog timer overflows.
Starts when execution of the current instruction or exception
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.
Starts when a direction transition occurs as the result of
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.
Rev. 3.00 Mar 21, 2006 page 81 of 788
Section 4 Exception Handling
REJ09B0300-0300
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