Fujitsu F2MC-8FX Hardware Manual page 338

CHAPTER 19 INTERRUPT PIN SELECTION CIRCUIT
Table 19.4-1 Functional Description of Each Bit of Interrupt Pin Selection Circuit Control Register (WICR)
(2 / 2)
Bit name
UCK0:
bit1 UCK0 interrupt pin
select bit
TRG0:
bit0 TRG0 interrupt pin
select bit
When these bits are set to "1" and the operation of INT00 (channel 0) of the external interrupt circuit is enabled in
MCU standby mode, the selected pins are enabled to perform input operation. The MCU wakes up from the standby
mode when a valid edge pulse is inputted to the pins. For information about the standby modes, refer to 6.8 Operations
in Low-power Consumption Modes (Standby Modes).
Note:
The input signals to the peripheral pins do not generate an external interrupt even when "1" is written
to these bits if the INT00 (channel 0) of the external interrupt circuit is disabled.
Do not modify the values of these bits while the INT00 (channel 0) of the external interrupt circuit is
enabled. If modified, the external interrupt circuit may detect a valid edge, depending on the pin input
level.
If more than one interrupt pin are selected in WICR (interrupt pin selection circuit control register)
simultaneously and the operation of INT00 (channel 0) of the external interrupt circuit is enabled (the
values other than "00
selected pins will remain enabled to perform input so as to accept interrupts even in a standby mode.
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This bit is used to determine whether to select the UCK0 pin as an interrupt input pin.
Writing "0" to the bit deselects the UCK0 pin as an interrupt input pin and the circuit treats the
UCK0 pin input as being fixed at "0".
Writing "1" to the bit selects the UCK0 pin as an interrupt input pin and the circuit passes the
UCK0 pin input to INT00 (channel 0) of the external interrupt circuit. In this case, the input signal to
the UCK0 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 TRG0 pin as an interrupt input pin.
Writing "0" to the bit deselects the TRG0 pin as an interrupt input pin and the circuit treats the
TRG0 pin input as being fixed at "0".
Writing "1" to the bit selects the TRG0 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.
" are set to SL01, SL00 bits in EIC00 register of external interrupt circuit.), the
B
Function