HD64F2149YV datasheet(151/1075 Pages) RENESAS

151 / 1075 page

Section 5 Interrupt Controller

Rev. 3.00 Jan 18, 2006 page 123 of 1044

REJ09B0280-0300

Address bus

Break request

signal

Breakpoint

NOP instruction is executed at breakpoint address H'0312 and

next address, H'0314; fetch from address H'0316 starts after

end of exception handling.

Instruction

fetch

Internal

operation

Internal

operation

Vector

fetch

Stack save

Instruction

fetch

H'0310

NOP

execution

H'0310 NOP

H'0312 NOP

H'0314 NOP

H'0316 NOP

NOP

execution

NOP

execution

Interrupt exception handling

H'0312

H'0314

H'0316

H'0318

H'0036

SP-2

SP-4

• Program area in on-chip memory, 1-state execution instruction at specified break address

Instruction

fetch

Address bus

Break request

signal

Breakpoint

MOV instruction is executed at breakpoint address H'0312,

NOP instruction at next address, H'0316, is not executed;

fetch from address H'0316 starts after end of exception handling.

Internal

operation

Internal

operation

Vector

fetch

Stack save

Instruction

fetch

H'0310

NOP

execution

H'0310 NOP

H'0312 MOV.W #xx:16,Rd

H'0316 NOP

H'0318 NOP

MOV.W

execution

Interrupt exception handling

H'0312

H'0314

H'0316

H'0318

H'0036

SP-2

SP-4

• Program area in on-chip memory, 2-state execution instruction at specified break address

Address bus

Break request

signal

Breakpoint

NOP instruction at breakpoint address H'0312 is not executed;

fetch from address H'0312 starts after end of exception handling.

Instruction

fetch

Internal

operation

Internal

operation

Vector

fetch

Stack save

H'0310

NOP

execution

H'0310 NOP

H'0312 NOP

H'0314 NOP

H'0316 NOP

Interrupt exception handling

H'0312

H'0314

H'0036

SP-2

SP-4

• Program area in external memory (2-state access, 16-bit-bus access),

1-state execution instruction at specified break address

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Instruction

fetch

Figure 5.6 Examples of Address Break Timing

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