M32C80 Datasheet, PDF (195/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
16. Serial I/O
External Interrupt Request Source Select Register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
IFSR
Address
031F16
After Reset
0016
Bit
Symbol
Bit Name
Function
RW
IFSR0
INT0 Interrupt Polarity
Select Bit⁽¹⁾
0: One edge
1 : Both edges
RW
INT1 Interrupt Polarity 0: One edge
IFSR1 _{Select Bit(1)}
1: Both edges
RW
IFSR2
INT2 Interrupt Polarity
Select Bit⁽¹⁾
0: One edge
1: Both edges
RW
INT3 Interrupt Polarity 0: One edge
IFSR3 _{Select Bit(1)}
1: Both edges
RW
IFSR4
INT4 Interrupt Polarity
select bit⁽¹⁾
0: One edge
1: Both edges
RW
INT5 Interrupt Polarity ^{0: One edge}
IFSR5 _{Select Bit(1)}
1: Both edges
RW
IFSR6
UART0, UART3
Interrupt Source
Select Bit
0: UART3 bus conflict, start condition
detect, stop condition detect
1: UART0 bus conflict, start condition
RW
detect, stop condition detect
IFSR7
UART1, UART4
Interrupt Source
Select Bit
0: UART4 bus conflict, start condition
detect, stop condition detect
1: UART1 bus conflict, start condition
RW
detect, stop condition detect
NOTE:
1. Set this bit to "0" to select a level-sensitive triggering.
When setting this bit to "1", set the POL bit in the INTilC register (i = 0 to 5) to "0" (falling edge).
Figure 16.9 IFSR Register
Rev. 1.00 Nov. 01, 2005 Page 176 of 330
REJ09B0271-0100