M37515M4-XXXHP Datasheet, PDF (12/54 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
M37515M4-XXXHP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Interrupt request bit
Interrupt enable bit
Interrupt disable flag (I)
Fig. 8 Interrupt control
BRK instruction
Reset
Interrupt request
b7
b0 _{Interrupt edge selection register}
(INTEDGE : address 003A16)
INT0 active edge selection bit
INT1 active edge selection bit
INT2 active edge selection bit
INT3 active edge selection bit
Reserved (Do not write “1” to this bit)
Not used (returns “0” when read)
0 : Falling edge active
1 : Rising edge active
b7
b0 _{Interrupt request register 1}
b7
(IREQ1 : address 003C16)
INT0 interrupt request bit
SCL/SDA interrupt request bit
INT1 interrupt request bit
INT2 interrupt request bit
INT3 interrupt request bit
I²C interrupt request bit
Timer X interrupt request bit
Timer Y interrupt request bit
0 : No interrupt request issued
1 : Interrupt request issued
b7
b0
b7
Interrupt control register 1
(ICON1 : address 003E16)
INT0 interrupt enable bit
SCL/SDA interrupt enable bit
INT1 interrupt enable bit
INT2 interrupt enable bit
INT3 interrupt enable bit
I²C interrupt enable bit
Timer X interrupt enable bit
Timer Y interrupt enable bit
0 : Interrupts disabled
1 : Interrupts enabled
Fig. 9 Structure of interrupt-related registers (1)
b0 _{Interrupt request register 2}
(IREQ2 : address 003D16)
Timer 1 interrupt request bit
Timer 2 interrupt request bit
Serial I/O reception interrupt request bit
Serial I/O transmit interrupt request bit
CNTR0 interrupt request bit
CNTR1 interrupt request bit
AD converter interrupt request bit
Not used (returns “0” when read)
0 : No interrupt request issued
1 : Interrupt request issued
b0 _{Interrupt control register 2}
(ICON2 : address 003F16)
Timer 1 interrupt enable bit
Timer 2 interrupt enable bit
Serial I/O reception interrupt enable bit
Serial I/O transmit interrupt enable bit
CNTR0 interrupt enable bit
CNTR1 interrupt enable bit
AD converter interrupt enable bit
Not used (returns “0” when read)
(Do not write “1” to this bit)
0 : Interrupts disabled
1 : Interrupts enabled
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