External Interrupt 1 Control Register 1 (Eic1); Figure 10.4-2 External Interrupt 1 Control Register 1 (Eic1) - Fujitsu F2MC-8L Series Hardware Manual

CHAPTER 10 EXTERNAL INTERRUPT CIRCUIT 1 (EDGE)

10.4.1 External Interrupt 1 Control Register 1 (EIC1)

The external interrupt 1 control register 1 (EIC1) is used to select the edge polarity for
external interrupt pins (INT0, INT1) and to control interrupts.
External Interrupt 1 Control Register 1 (EIC1)
Address Bit 7
0023 EIR1
H
R/W
R/W : Readable and writable
: Unused
X : Indeterminate
: Initial value
236

Figure 10.4-2 External Interrupt 1 Control Register 1 (EIC1)

Bit 6 Bit 5 Bit 4 Bit 3
SL11 SL10 EIE1 EIR0
R/W R/W R/W R/W
INT0 (IRQ0)
EIE0
0 Disables interrupt request output.
1 Enables interrupt request output.
SL01 SL00
0
0
1
1
EIR0
0
The specified edge has not been input. Clears this bit.
1
The specified edge has been input.
INT1 (IRQ1)
EIE1
0 Disables interrupt request output.
1 Enables interrupt request output.
SL11 SL10
0
0
1
1
EIR1
0
The specified edge has not been input. Clears this bit.
1
The specified edge has been input.
Bit 2 Bit 1 Bit 0
SL10 SL00 EIE0
R/W R/W R/W
Interrupt request enable bit 0
Edge polarity selection bit 0
0 Rising edge
1 Falling edge
0 Both edges
1 Both edges
External interrupt request flag bit 0
Read
Interrupt request enable bit 1
Edge polarity selection bit 1
0 Rising edge
1 Falling edge
0 Both edges
1 Both edges
External interrupt request flag bit 1
Read
Initial value
00000000
B
Write
No effect. The bit does not change.
Write
No effect. The bit does not change.