HD6433802H Datasheet, PDF (87/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

6. Wakeup Interrupt Request Register (IWPR)
Bit
Initial value
Read/Write
7
IWPF7
0
R/W ^*
6
IWPF6
0
R/W^*
5
IWPF5
0
R/W ^*
4
IWPF4
0
R/W ^*
3
IWPF3
0
R/W ^*
2
IWPF2
0
R/W ^*
1
IWPF1
0
R/W ^*
0
IWPF0
0
R/W ^*
Note: * Only a write of 0 for flag clearing is possible
IWPR is an 8-bit read/write register containing wakeup interrupt request flags. When one of pins
WKP₇ to WKP₀ is designated for wakeup input and a rising or falling edge is input at that pin, the
corresponding flag in IWPR is set to 1. A flag is not cleared automatically when the
corresponding interrupt is accepted. Flags must be cleared by writing 0.
Bits 7 to 0: Wakeup interrupt request flags (IWPF7 to IWPF0)
Bit n
IWPFn
0
1
Description
Clearing conditions:
When IWPFn= 1, it is cleared by writing 0
(initial value)
Setting conditions:
When pin WKP_n is designated for wakeup input and a rising or falling edge is input at
that pin
(n = 7 to 0)
69