Filter
Top Products
227
CHAPTER 11 EXTERNAL INTERRUPT CIRCUIT (EDGE)
Reference:
Pins with a pull-up resistor go to the "H" level (pull-up state) rather than to the high-impedance state
when the output transistor is turned "OFF".
■ External interrupt circuit register
Figure 11.3-2 External interrupt circuit register
■ External interrupt circuit interrupt sources
IRQ0:
This interrupt request is generated if an edge of the selected polarity is input to the external interrupt pin
INT0 when output of interrupt requests is enabled.
IRQ1:
This interrupt request is generated if an edge of the selected polarity is input to the external interrupt pin
INT1 when output of interrupt requests is enabled.
EIC (External interrupt control register)
Address
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Initial value
0030
H
EIR1 SL11 SL10 EIE1 EIR0 SL01 SL00 EIE0 00000000
B
R/W R/W R/W R/W R/W R/W R/W R/W
IRQ1
INT1
IRQ0
INT0