Renesas M16C Series User Manual page 290

M30240 Group
Interrupt control register (Note 2)
b7 b6 b5 b4 b3 b2
Port Pi direction register
b7 b6 b5 b4 b3
Pull-up control register 0
b7 b6 b5 b4 b3 b2
Figure 2.120: Key-input interrupt-related registers
Rev.1.00 Sep 24, 2003 Page 272 of 360
Symbol
b1 b0
KUPIC
Bit symbol Bit name
Interrupt priority level
ILVL0
select bit
ILVL1
ILVL2
Interrupt request bit
IR
Nothing is assigned.
These bits can neither be set nor reset. When read, their contents are
indeterminate.
Note 1: This bit can only be reset (= 0). It cannot be set (= 1).
Note 2: To rewrite the interrupt control register, do so when it would not generate an interrupt
request for that register. See the Interrupt precautions section for more details.
b2 b1 b0
Symbol
PDi (i = 0, 1)
Bit symbol Bit name
PDi_0 Port Pi direction register
0
PDi_1 Port Pi direction register
1
PDi_2 Port Pi direction register
2
PDi_3 Port Pi direction register
3
PDi_4 Port Pi direction register
4
PDi_5 Port Pi direction register
5
PDi_6 Port Pi direction register
6
PDi_7 Port Pi direction register
7
b1 b0
Symbol
PUR0
Bit symbol Bit name
PU00 P0 to P0 pull-up
0 3
PU01 P0 to P0 pull-up
4 7
PU02 P1 to P1 pull-up
0 3
PU03 P1 to P1 pull-up
4 7
PU04 P2 to P2 pull-up
0 3
PU05 P2 to P2 pull-up
4 7
PU06 P3 to P3 pull-up
0 3
PU07 P3 to P3
4 7
When reset
Address
XXXX0000
004D
16
Function
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
0 : Interrupt not requested
1 : Interrupt requested
Address When reset
03E2 , 03E3
16 16
Function
0 : Input mode
(Functions as an input port)
1 : Output mode
(Functions as an output port)
(i = 0, 1)
Address
03FC
16
Function
The corresponding port is pulled high
with a pull-up resistor
0 : Not pulled high
1 : Pulled high
Key-Input Interrupt
2
R W
(Note1)
00
16
R W
When reset
00
16
R W