Fujitsu F2MC-8FX Hardware Manual page 337

Table 19.4-1 Functional Description of Each Bit of Interrupt Pin Selection Circuit Control Register (WICR)
(1 / 2)
Bit name
bit7 Unused bit
INT00:
bit6 IINT00 interrupt pin
select bit
SI:
bit5 SI interrupt pin select
bit
SCK:
bit4 SCK interrupt pin
select bit
EC0:
bit3 EC0 interrupt pin
select bit
UI0:
bit2 UI0 interrupt pin select
bit
This bit is not used.
• Reading always returns "0".
• Writing has no effect on the operation.
This bit is used to determine whether to select the INT00 pin as an interrupt input pin.
Writing "0" to the bit deselects the INT00 pin as an interrupt input pin and the circuit treats the
INT00 pin input as being fixed at "0".
Writing "1" to the bit selects the INT00 pin as an interrupt input pin and the circuit passes the
INT00 pin input to INT00 (channel 0) of the external interrupt circuit. In this case, the input signal to
the INT00 pin can generate an external interrupt if INT00 (channel 0) operation is enabled in the
external interrupt circuit.
This bit is used to determine whether to select the SI pin as an interrupt input pin.
Writing "0" to the bit deselects the SI pin as an interrupt input pin and the circuit treats the SI pin
input as being fixed at "0".
Writing "1" to the bit selects the SI pin as an interrupt input pin and the circuit passes the SI pin
input to INT00 (channel 0) of the external interrupt circuit. In this case, the input signal to the SI pin
can generate an external interrupt if INT00 (channel 0) operation is enabled in the external interrupt
circuit.
This bit is used to determine whether to select the SCK pin as an interrupt input pin.
Writing "0" to the bit deselects the SCK pin as an interrupt input pin and the circuit treats the SCK
pin input as being fixed at "0".
Writing "1" to the bit selects the SCK pin as an interrupt input pin and the circuit passes the SCK
pin input to INT00 (channel 0) of the external interrupt circuit. In this case, the input signal to the
SCK pin can generate an external interrupt if INT00 (channel 0) operation is enabled in the external
interrupt circuit.
This bit is used to determine whether to select the EC0 pin as an interrupt input pin.
Writing "0" to the bit deselects the EC0 pin as an interrupt input pin and the circuit treats the EC0
pin input as being fixed at "0".
Writing "1" to the bit selects the EC0 pin as an interrupt input pin and the circuit passes the EC0 pin
input to INT00 (channel 0) of the external interrupt circuit. In this case, the input signal to the EC0
pin can generate an external interrupt if INT00 (channel 0) operation is enabled in the external
interrupt circuit.
This bit is used to determine whether to select the UI0 pin as an interrupt input pin.
Writing "0" to the bit deselects the UI0 pin as an interrupt input pin and the circuit treats the UI0
pin input as being fixed at "0".
Writing "1" to the bit selects the UI0 pin as an interrupt input pin and the circuit passes the UI0 pin
input to INT00 (channel 0) of the external interrupt circuit. In this case, the input signal to the UI0
pin can generate an external interrupt if INT00 (channel 0) operation is enabled in the external
interrupt circuit.
CHAPTER 19 INTERRUPT PIN SELECTION CIRCUIT
Function
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