HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 470

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

IRR1—Interrupt request register 1
466
Bit
Initial value
Read/Write
Note: * Only a write of 0 for flag clearing is possible.
Timer B1 interrupt request flag
0 [Clearing condition]
1 [Setting condition]
When IRRTB1 = 1, it is cleared by writing 0
When timer counter B1 overflows from H'FF to H'00
Timer A interrupt request flag
0 [Clearing condition]
1 [Setting condition]
When IRRTA = 1, it is cleared by writing 0
When timer counter A overflows from H'FF to H'00
IRRTB1
R/W
7
0
*
IRQ
0 [Clearing condition]
1 [Setting condition]
3
When IRRIn = 1, it is cleared by writing 0
When pin IRQn is set for interrupt input and the designated signal
edge is input
IRRTA
to IRQ
R/W
6
0
*
0
interrupt request flag
—
—
5
0
—
—
4
1
IRRI3
R/W
3
0
*
H'FFF7
IRRI2
R/W
2
0
*
IRRI1
R/W
1
0
System control
*
(n = 3 to 0)
IRRI0
R/W
0
0
*