Datasheet

Section 3 Exception Handling

Rev. 3.00 Mar. 15, 2006 Page 56 of 526

REJ09B0060-0300

WKP5 to WKP0 Interrupts:

WKP5 to WKP0 interrupts are requested by input signals to pins WKP5 to WKP0. These six

interrupts have the same vector addresses, and are detected individually by either rising edge

sensing or falling edge sensing, depending on the settings of bits WPEG5 to WPEG0 in IEGR2.

When pins WKP5 to WKP0 are designated for interrupt input in PMR5 and the designated signal

edge is input, the corresponding bit in IWPR is set to 1, requesting the CPU of an interrupt. These

interrupts can be masked by setting bit IENWP in IENR1.

Vector fetch

Internal

address bus

Internal read

signal

Internal write

signal

Internal data

bus (16 bits)

RES

Internal

processing

Prefetch of

first program

instruction

(1), (3) Address of reset vector: (1) = H'000000, (3) = H'000002

(2), (4) Start address (contents of reset vector)

(5) Start address

(6) First instruction of program

(1) (3) (5)

(2) (4) (6)

Figure 3.1 Reset Sequence