327
CHAPTER 17 DTP/EXTERNAL INTERRUPTS
17.4 Explanation of Operation of DTP/External Interrupt
The DTP/external interrupt has an external interrupt function and a DTP function. The
setting and operation of each function are explained.
■Setting of DTP/External Interrupt
Using the DTP/external interrupt requires, the setting shown in Figure 17.4-1 .
Figure 17.4-1 Setting of DTP/External Interrupt
ICS0 ISE IL1 IL0
IL2
ICS3 ICS2 ICS1
ICS0 ISE IL1 IL0
IL2
ICS3 ICS2 ICS1
ICR interrupt control register
LB15
DDR port direction register
bit15 14 13 12 11 10
9 bit8 bit7 6 5 4 3 2 1 bit0
: Set 0
0
: Set 1 1
: Used bit
: Set the bit corresponding to used pin to 1
: Set the bit corresponding to used pin to 0
: Unused bit
Set the bit corresponding to pin used for DTP/external interrupt input to 0.
−
0
At DTP (EI2OS)
1 1
LB12 LA12LA14 LB13 LA13
LA15 LB14
ELVR1
LB8 LA8
LB9 LA9
LA10LB11 LA11 LB10
−MOD2MOD1
−CSL1 CSL0
−− CNTE TRGINTE UF
RELDMOD0OUTE OUTL
ER9 ER8
ER12ER11 ER10ER15ER14 ER13
EIRR1
EN9 EN8
EN12EN11 EN10EN15EN14 EN13
ENIR1
At using INT8R
TMCSR3
(timer control)
ADER5
(Analog input enable)
only using INT8,10,11,13E
ADE12ADE15 ADE14 ADE13 ADE8ADE11ADE10 ADE9