HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 829

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Bit
Initial value
Read/Write
Note:
ISR—IRQ Status Register
*
Only 0 can be written, to clear the flag.
IRQ to IRQ flags
IRQ5F to IRQ0F
5
—
—
7
0
Bits 5 to 0
0
1
0
—
—
6
0
Setting and Clearing Conditions
[Clearing conditions]
Read IRQnF when IRQnF = 1, then write 0 in IRQnF.
IRQnSC = 0,
handling is carried out.
IRQnSC = 1 and IRQn interrupt exception handling is
carried out.
[Setting conditions]
IRQnSC = 0 and IRQn input is low.
IRQnSC = 1 and a falling edge is generated in the IRQn input.
IRQ5F
R/(W) *
5
0
IRQ4F
R/(W) *
822
4
0
IRQn
input is high, and interrupt exception
IRQ3F
R/(W) *
3
0
IRQ2F
R/(W) *
H'F6
2
0
Interrupt controller
IRQ1F
R/(W) *
1
0
(n = 5 to 0)
IRQ0F
R/(W) *
0
0