M30621ECGP MITSUBISHI [Mitsubishi Electric Semiconductor], M30621ECGP Datasheet - Page 51

• Manufacturer Part Number: M30621ECGP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

______
INT Interrupt
______
INT Interrupt
Figure 1.10.10. Interrupt request cause select register
________
INT0 to INT2 are triggered by the edges of external inputs. The edge polarity is selected using the polarity
select bit.
As for external interrupt input, an interrupt can be generated both at the rising edge and at the falling edge
by setting “1” in the INTi interrupt polarity switching bit of the interrupt request cause select register
(035F
to ‘falling edge’ (“0”).
Figure 1.10.10 shows the Interrupt request cause select register.
Interrupt request cause select register
b7
16
b6
). To select both edges, set the polarity switching bit of the corresponding interrupt control register
_______
b5
b4
b3
b2
b1
b0
Note 1: INT3 to INT5 interrupts cannot be used in M16C/62 (80-pin version) group. Thus,
Note 2: INT3 to INT5 interrupts cannot be used in M16C/62 (80-pin version) group.
Bit symbol
IFSR0
IFSR1
IFSR2
IFSR3
IFSR4
IFSR5
IFSR6
IFSR7
the setting value of these bits are invalid.
Symbol
IFSR
INT0 interrupt polarity
switching bit
INT1 interrupt polarity
switching bit
INT2 interrupt polarity
switching bit
INT3 interrupt polarity
switching bit (Note 1)
INT4 interrupt polarity
switching bit (Note 1)
INT5 interrupt polarity
switching bit (Note 1)
Interrupt request cause
select bit
Interrupt request cause
select bit
Bit name
Address
035F
16
When reset
0 : SIO3
1 : INT4
0 : SIO4
1 : INT5
0 : One edge
1 : Two edges
0 : One edge
1 : Two edges
0 : One edge
1 : Two edges
0 : One edge
1 : Two edges
0 : One edge
1 : Two edges
0 : One edge
1 : Two edges
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
00
16
Function
M16C / 62 Group (80-pin)
Mitsubishi microcomputers
R
W
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