HD6432670 Hitachi, HD6432670 Datasheet - Page 143

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

5.3.5
ISR is an IRQ15 to IRQ0 interrupt request flag register.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Note: Only 0 can be written, to clear the flag.
Bit Name
IRQ15F
IRQ14F
IRQ13F
IRQ12F
IRQ11F
IRQ10F
IRQ9F
IRQ8F
IRQ7F
IRQ6F
IRQ5F
IRQ4F
IRQ3F
IRQ2F
IRQ1F
IRQ0F
IRQ Status Register (ISR)
Initial Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
Description
[Setting conditions]
When the interrupt source selected by ISCR
occurs
[Clearing conditions]
Cleared by reading IRQnF flag when IRQnF
= 1, then writing 0 to IRQnF flag
When interrupt exception handling is
executed when low-level detection is set
and
When IRQn interrupt exception handling is
executed when falling, rising, or both-edge
detection is set
When the DTC is activated by an IRQn
interrupt, and the DISEL bit in MRB of the
DTC is cleared to 0
,54Q
input is high
Rev. 2.0, 04/02, page 97 of 906
(n=15 to 0)