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EM78P259N/260N
8-Bit Microprocessor with OTP ROM
Product Specification (V1.2) 05.18.2007
• 43
(This specification is subject to change without further notice)
INT
ENI/DISI
IOD
RFWR
IOCFRD
IOCFWR
IRQn
IRQm
RFRD
IOCF
/RESET
/IRQn
VCC
RF
CLK
CLK
Q
Q
D
P
R
L
C
_
P
R
L
C
Q
Q
_
D
Fig. 6-8 Interrupt Input Circuit
Interrupt sources
Interrupt
occurs
ENI/
DISI
STACKACC
STACKR3
RETI
ACC
R3
R4
STACKR4
Fig. 6-9 Interrupt Backup Diagram
In EM78P259N/260N, each individual interrupt source has its own interrupt vector as
depicted in the table below.
Interrupt Vector Interrupt Status Priority *
003H External interrupt 1
006H Port 5 pin change 2
009H TCC overflow interrupt 3
00CH AD conversion complete interrupt 4
00FH Comparator interrupt 5
012H High-pulse width timer underflow interrupt 6
015H Low-pulse width timer underflow interrupt 7
018H TCCA overflow interrupt 8
01BH TCCB overflow interrupt 9
01EH TCCC overflow interrupt 10
*Priority: 1 = highest ; 10 = lowest priority