M16C65 Datasheet, PDF (262/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
14.2.6 Interrupt Source Select Register (IFSR)
14. Interrupts
Interrupt Source Select Register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
IFSR
Address
0207h
Bit Symbol
Bit Name
Function
IFSR0
INT0 interrupt polarity select 0 : One edge
bit
1 : Both edges
IFSR1
INT1 interrupt polarity select 0 : One edge
bit
1 : Both edges
IFSR2
INT2 interrupt polarity select 0 : One edge
bit
1 : Both edges
IFSR3
INT3 interrupt polarity select 0 : One edge
bit
1 : Both edges
IFSR4
INT4 interrupt polarity select 0 : One edge
bit
1 : Both edges
IFSR5
INT5 interrupt polarity select 0 : One edge
bit
1 : Both edges
IFSR6
Interrupt request source
select bit
0 : SI/O3
1 : INT4
IFSR7
Interrupt request source
select bit
0 : SI/O4
1 : INT5
After Reset
00h
RW
RW
RW
RW
RW
RW
RW
RW
RW
IFSR5-IFSR0 (INT5-INT0 Interrupt Polarity Select Bit) (b5-b0)
When setting this bit to 1 (both edges), make sure the POL bit in registers INT0IC to INT5IC are set to
0 (falling edge).
IFSR7, IFSR6 (Interrupt Request Source Select Bit) (b7, b6)
In memory expansion or microprocessor mode, when the data bus is 16 bits wide (BYTE pin is low), set
this bit to 0 (SI/O3, SI/O4).
When setting this bit to 0 (SI/O3, SI/O4), make sure the POL bit in registers S3IC and S4IC are set to 0
(falling edge).
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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