Appendix B Internal I/O Registers
Rev.3.00 Jul. 19, 2007 page 506 of 532
REJ09B0397-0300
IRR2—Interrupt request register 2
H'F7
System control
Bit
Initial value
Read/Write
7
IRRDT
0
R/W
*
2
6
IRRAD
0
R/W
*
2
5
⎯
0
⎯
4
⎯
0
⎯
3
IRRTFH
0
R/W
*
2
0
IRRTB
0
R/W
*
2
2
IRRTFL
0
R/W
*
2
1
IRRTC
*
1
0
R/W
*
2
Direct transfer interrupt request flag
0
[Clearing condition]
1
[Setting condition]
When IRRDT = 1, it is cleared by writing 0
A SLEEP instruction is executed when DTON = 1 and a direct
transfer is made
A/D converter interrupt request flag
0
[Clearing condition]
1
[Setting condition]
When IRRAD = 1, it is cleared by writing 0
When A/D conversion is completed and ADSF is reset
Timer FH interrupt request flag
0
[Clearing condition]
1
[Setting condition]
When IRRTFH = 1, it is cleared by writing 0
When counter FH matches output compare register FH in
8-bit mode, or when 16-bit counter F (TCFL, TCFH)
matches 16-bit output compare register F (OCRFL,
OCRFH) in 16-bit mode
Timer FL interrupt request flag
0
[Clearing condition]
1
[Setting condition]
When IRRTFL = 1, it is cleared by writing 0
When counter FL matches output compare register FL
in 8-bit mode
Timer C interrupt request flag
0
[Clearing condition]
1
[Setting condition]
When IRRTC = 1, it is cleared by writing 0
When the timer C counter overflows from H'FF to H'00
or underflows from H'00 to H'FF
Timer B interrupt request flag
0
[Clearing condition]
1
[Setting condition]
When IRRTB = 1, it is cleared by writing 0
When the timer B counter overflows from
H'FF to H'00
Notes: 1. IRRTC is a function of the H8/3857 Group only.
In the H8/3854 Group this bit is reserved, and is always 0.
2. Only a write of 0 for flag clearing is possible.
Содержание F-ZTAT H8 Series
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