E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 111

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.1
4.1.1
As table 4.1 indicates, exception handling may be caused by a reset, trap instruction, or interrupt.
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. Trap instruction exceptions
are accepted at all times, in the program execution state. See appendix D.1, Port States in Each
Mode.
Exception handling sources, the stack structure, and the operation of the CPU vary depending on
the interrupt control mode set by the INTM0 and INTM1 bits of SYSCR.
Table 4.1
Notes: 1. Traces are enabled only in interrupt control modes 2 and 3. Trace exception handling is
Priority
High
Low
2. Interrupt detection is not performed on completion of ANDC, ORC, XORC, or LDC
3. Trap instruction exception handling requests are accepted at all times in program
Exception Handling Types and Priority
Overview
Exception Type
Reset
Trace *
Interrupt
Trap instruction (TRAPA) *
not executed after execution of an RTE instruction.
instruction execution, or on completion of reset exception handling.
execution state.
Exception Types and Priority
1
Section 4 Exception Handling
3
Start of Exception Handling
Starts immediately after a low-to-high transition at the
RES pin, or when the watchdog timer overflows.
Starts when execution of the current instruction or
exception handling ends, if the trace (T) bit is set to 1
Starts when execution of the current instruction or
exception handling ends, if an interrupt request has been
issued *
Started by execution of a trap instruction (TRAPA)
2
Rev. 5.00 Sep 14, 2006 page 81 of 1060
Section 4 Exception Handling
REJ09B0331-0500