Renesas 4513 Información técnica descargar pdf (Pagina 27)

4513/4514 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

Table 7 External interrupt activated conditions

Name

External 0 interrupt

External 1 interrupt

Input pin

P30/INT0

P31/INT1

Activated condition

When the next waveform is input to P30/INT0 pin

• Falling waveform (“H”→“L”)

• Rising waveform (“L”→“H”)

• Both rising and falling waveforms

When the next waveform is input to P31/INT1 pin

• Falling waveform (“H”→“L”)

• Rising waveform (“L”→“H”)

• Both rising and falling waveforms

Valid waveform

selection bit

I11

I12

I21

I22

Fig. 17 External interrupt circuit structure

EXTERNAL INTERRUPTS

The 4513/4514 Group has two external interrupts (external 0 and

external 1). An external interrupt request occurs when a valid

waveform is input to an interrupt input pin (edge detection).

The external interrupts can be controlled with the interrupt control

registers I1 and I2.

EXF1

SNZI1

/INT1

Wakeup

Skip

EXF0

SNZI0

/INT0

Rising

Falling

One-sided edge

detection circuit

Both edges

detection circuit

External 0

interrupt

External 1

interrupt

Wakeup

Skip

Rising

Falling

One-sided edge

detection circuit

Both edges

detection circuit

This symbol represents a parasitic diode on the port.

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 98 99

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