Renesas M16C FAMILY Hardware Manual page 69

Under development
Preliminary specification
Specifications in this manual are tentative and subject to change.
R8C/11 Group
• Interrupt Priority Resolution Circuit
The interrupt priority resolution circuit is used to select the interrupt with the highest priority among
those requested.
Figure 10.9 shows the circuit that judges the interrupt priority level.
Priority level of each interrupt
Compare 1
INT3
Timer Z
Timer X
INT0
Timer C
INT1
Timer Y
UART1 reception
UART0 reception
Compare 2
A-D conversion
INT2
UART1 transmission
UART0 transmission
Key input
I flag
Address match
Watchdog timer
Oscillation stop detection
Voltage detection
Notes:
1. For development support tool only
Figure 10.9 Interrupts Priority Select Circuit
Rev.0.91 2003 Sep 08
Level 0 (default value)
IPL
1
page 59 of 184
Highest
Priority of peripheral fucntion interrupts
(if priority levels are same)
Lowest
Interrupt request level
resolution output signal
accepted
10.1 Interrupt Overview
Interrupt
request