68
Bit 2—Timer FL Interrupt Request Flag (IRRTFL)
Bit 2: IRRTFL
Description
0
[Clearing conditions]
(initial value)
When IRRTFL = 1, it is cleared by writing 0
1
[Setting conditions]
When counter FL matches output compare register FL in 8-bit timer mode
Bit 1—Timer Y Interrupt Request Flag (IRRTY)
Bit 1: IRRTY
Description
0
[Clearing conditions]
(initial value)
When IRRTY is 1, it is cleared by writing 0 to IRRTYC
1
[Setting conditions]
When the timer Y counter value overflows (from H’FFFF to H’0000)
Note:
This bit is read-only. It is cleared by writing 0 to bit 0 (IRRTYC).
Bit 0—Timer Y Interrupt Request Clear Flag (IRRTYC): Bit 0 is a special bit for clearing
the IRRTY interrupt request flag. Writing 0 to this bit clears bit 1 (IRRTY) to 0. Note that
writing 0 to this bit does not give the bit itself a value of 0.
Bit 0 is always read as 1, and only a write of 0 to this bit is valid.
Wakeup Interrupt Request Register (IWPR)
Bit
7
6
5
4
3
2
1
0
IWPF7
IWPF6
IWPF5
IWPF4
IWPF3
IWPF2
IWPF1
IWPF0
Initial value
0
0
0
0
0
0
0
0
Read/Write
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
Note:
*
Only a write of 0 for flag clearing is possible.
IWPR is an 8-bit read/write register, in which the corresponding bit is set to 1 when pins
WKP
7
to
WKP
0
are set to wakeup input and a pin receives a falling edge input. The flags are not cleared
automatically when an interrupt is accepted. It is necessary to write 0 to clear each flag.