M30622 Mitsubishi, M30622 Datasheet - Page 65

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

______
INT Interrupt
______
INT Interrupt
Figure 1.14.10. Interrupt request cause select register
________
INT0 to INT5 are triggered by the edges of external inputs. The edge polarity is selected using the polarity
select bit.
Of interrupt control registers, 0048
register, and 0049
interrupt request cause select bits - bits 6 and 7 of the interrupt request cause select register (035F
specify which interrupt request cause to select. After having set an interrupt request cause, be sure to clear
the corresponding interrupt request bit before enabling an interrupt.
Either of the interrupt control registers - 0048
to “0” to select an serial I/O as the interrupt request cause.
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 1.14.10 shows the Interrupt request cause select register.
Note 1:
Tentative Specifications REV.A
Interrupt request cause select register
16
b7
In M30623(80-pin package), can not use INT3 to INT5 as the interrupt factor, because
P1
________
). To select both edges, set the polarity switching bit of the corresponding interrupt control register
S
b6
pecifications in this manual are tentative and subject to change.
5
/D
b5
13
b4
/INT
_______
16
b3
3
is used both as serial I/O3 and as external interrupt INT4 input control register. Use the
b2
to P1
b1
b0
7
/D
Note 1: In M30623(80-pin package), can not use INT3 to INT5 interrupts,
Note 2: In M30623(80-pin package), can not use INT3 to INT5 interrupts.
15
Bit symbol
IFSR0
IFSR1
IFSR2
IFSR3
IFSR4
IFSR5
IFSR6
IFSR7
/INT
_______
16
Symbol
IFSR
so setting data of these bits are invalid.
5
is used both as serial I/O4 and external interrupt INT5 input control
have no corresponding external pin.
INT0 interrupt polarity
swiching bit
INT1 interrupt polarity
swiching bit
INT2 interrupt polarity
swiching bit
INT3 interrupt polarity
swiching bit
INT4 interrupt polarity
swiching bit
INT5 interrupt polarity
swiching bit
Interrupt request cause
select bit
Interrupt request cause
select bit
16
, 0049
Bit name
65
16
Address
035F
- has the polarity-switching bit. Be sure to set this bit
_______
16
_______
When reset
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
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
00
________
16
Fumction
Mitsubishi microcomputers
M16C / 62T Group
________
R
W
16
) - to