HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 108
HD64F7050
Manufacturer Part Number
HD64F7050
Description
32-Bit RISC Microcomputer SuperH RISC engine Family/
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD64F7050.pdf
(841 pages)
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Section 6 Interrupt Controller (INTC)
Bits 7 to 0—IRQ0–IRQ7 Flags (IRQ0F–IRQ7F): These bits display the IRQ0–IRQ7 interrupt
request status.
Bits 7-0:
IRQ0F–IRQ7F
0
1
Rev. 5.00 Jan 06, 2006 page 88 of 818
REJ09B0273-0500
IRQ pin
(IRQn interrupt reception/writing a 0 to IRQnF after reading an IRQnF = 1)
Detection Setting
Level detection
Edge detection
Level detection
Edge detection
RESIRQn
detection
detection
Figure 6.2 IRQ0 – IRQ7 Interrupt Control
edge
level
No IRQn interrupt request exists.
An IRQn interrupt request exists.
Description
Clear conditions: When IRQn input is high level
No IRQn interrupt request was detected. (initial value)
Clear conditions:
1. When a 0 is written after reading IRQnF = 1 status
2. When IRQn interrupt exception processing has been
Set conditions: When IRQn input is low level
An IRQn interrupt request was detected.
Set conditions: When a falling edge occurs at an IRQn
input
executed
(0: level, 1: edge)
S
R
Q
IRQnS
ISR.IRQnF
CPU
interrupt
request
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