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R8C/18 Group, R8C/19 Group
12.1.6.10 Interrupt Priority Judgement Circuit
The interrupt priority judgement circuit selects the highest priority interrupt, as shown in Figure 12.10.
Priority level of each interrupt
Figure 12.10
Interrupt Priority Level Judgement Circuit
Rev.1.30
Apr 14, 2006
REJ09B0222-0130
Level 0 (default value)
Compare 0
INT3
Timer Z
Timer X
INT0
Timer C
INT1
UART1 receive
UART0 receive
Compare 1
Comparator conversion
UART1 transmit
UART0 transmit
Key input
IPL
I flag
Address match
Watchdog timer
Oscillation stop detection
Voltage monitor 2
Page 84 of 233
Highest
Priority of peripheral function interrupts
(if priority levels are same)
Lowest
Interrupt request level
judgment output signal
Interrupt
request
acknowledged
12. Interrupts
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