tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 77

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA000
4. External Interrupt control circuit
4.1 Configuration
INT4 pin
INTi pin
by the built-in digital noise canceller.
cuit and an interrupt signal generation circuit.
rupt, after noise is removed by the noise canceller.
External interrupts detects the change of the input signal and generates an interrupt request. Noise can be removed
The external interrupt control circuit consists of a noise canceller, an edge detection circuit, a level detection cir-
Externally input signals are input to the rising edge or falling edge or level detection circuit for each external inter-
INTj pin
fcgck
fcgck
fs
fs/4
Noise canceller
Noise canceller
A B C D S
1
A B C D S
1
2
Z
2
Z
3 4
Figure 4-2 External Interrupts 1/2/3
Noise canceller
3 4
fcgck
Figure 4-1 External Interrupts 0/5
Figure 4-3 External Interrupt 4
fs/4
EINTCR4
EINTCRi
detection circuit
detection circuit
detection circuit
detection circuit
Level detection
Rising edge
Falling edge
Rising edge
Falling edge
Page 63
circuit
detection circuit
Falling edge
INTiES
INT4ES
INTiLVL
INT4LVL
signal generation
Interrupt request
signal generation
Interrupt request
circuit
Interrupt request signal
circuit
generation circuit
INTj interr
request
j=0,5
i=1 to 3
INTi interrupt
request
TMP89FM42
INT4 interrupt
request