M16C26 Datasheet, PDF (56/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

Udenvdeelropment
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
Interrupts
M16C/26 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Interrupt control register (Note 2)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
BCNIC
DMiIC(i=0, 1)
KUPIC
ADIC
SiTIC(i=0 to 2)
SiRIC(i=0 to 2)
TAiIC(i=0 to 4)
TBiIC(i=0 to 2)
Address
004A 16
004B16, 004C 16
004D 16
004E 16
005116, 005316, 004F16
005216, 005416, 005016
005516 to 005916
005A16 to 005C16
When reset
XXXXX0002
XXXXX0002
XXXXX0002
XXXXX0002
XXXXX0002
XXXXX0002
XXXXX0002
XXXXX0002
Bit symbol
ILVL0
Bit name
Interrupt priority level
select bit
ILVL1
ILVL2
Function
RW
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
IR
Interrupt request bit
0 : Interrupt not requested
1 : Interrupt requested
(Note 1)
Nothing is assigned.
In an attempt to write to these bits, write 0 . The value, if read, turns
out to be indeterminate.
Note 1: This bit can only be accessed for reset (= 0), but cannot be accessed for set (= 1).
Note 2: To rewrite the interrupt control register, do so at a point that does not generate the
interrupt request for that register. For details, see the precautions for interrupts.
b7 b6 b5 b4 b3 b2 b1 b0
0
Symbol
INTiIC(i=3)
INTiIC(i=4, 5)
INTiIC(i=0, 1)
Address
004416
004916, 004816
005D16, 005E16
When reset
XX00X0002
XX00X0002
XX00X0002
Bit symbol
Bit name
ILVL0
Interrupt priority level
select bit
ILVL1
ILVL2
Function
RW
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
IR
Interrupt request bit
POL
Polarity select bit
0: Interrupt not requested
1: Interrupt requested
0 : Selects falling edge
1 : Selects rising edge
(Note 1)
Reserved bit
Must always be set to 0
Nothing is assigned.
In an attempt to write to these bits, write 0 . The value, if read, turns
out to be indeterminate.
Note 1: This bit can only be accessed for reset (= 0), but cannot be accessed for set (= 1).
Note 2: To rewrite the interrupt control register, do so at a point that does not generate the
interrupt request for that register. For details, see the precautions for interrupts.
Figure 1.9.3. Interrupt control registers
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