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R01UH0092EJ0110 Rev.1.10
Page 195 of 807
Jul 31, 2012
M16C/64C Group
14. Interrupts
14.2.2
Interrupt Control Register 1
(TB5IC, TB4IC/U1BCNIC, TB3IC/U0BCNIC, BCNIC, DM0IC to DM3IC, KUPIC,
ADIC, S0TIC to S2TIC, S0RIC to S2RIC, TA0IC to TA4IC, TB0IC to TB2IC,
U5BCNIC/CEC1IC, S5TIC/CEC2IC, S5RIC to S7RIC, U6BCNIC/RTCTIC,
S6TIC/RTCCIC, U7BCNIC/PMC0IC, S7TIC/PMC1IC, IICIC, SCLDAIC)
Rewrite these registers at a point where an interrupt request for the corresponding register is not
generated.
When multiple interrupt sources share the register, select an interrupt source in registers IFSR2A and
IFSR3A.
IR (Interrupt request bit) (b3)
Do not set the IR bit to 1 when it is 0.
Interrupt Control Register 1
Symbol
Address
Bit Symbol
Bit Name
RW
Reset Value
XXXX X000b
Function
IR
Interrupt request bit
0: Interrupt not requested
1: Interrupt requested
RW
—
(b7-b4)
No register bits. If necessary, set to 0. The read value is undefined.
—
b2 b1 b0
0 0 0 : Level 0 (interrupt disabled)
0 0 1 : Level 1
0 1 0 : Level 2
0 1 1 : Level 3
1 0 0 : Level 4
1 0 1 : Level 5
1 1 0 : Level 6
1 1 1 : Level 7
Interrupt priority level select
bit
ILVL0
RW
ILVL1
ILVL2
RW
RW
b7 b6 b5 b4
b1
b2
b3
b0
Refer to the table below for symbols and addresses.
Symbol
Address
Symbol
Address
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