4513 datasheet(120/210 Pages) RENESAS

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4513 Datasheet(PDF) 120 Page - Renesas Technology Corp

Part #	4513

Description	4-BIT SINGLE-CHIP MICROCOMPUTER

PDF	210 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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120 / 210 page

APPLICATION

2.2 Interrupts

2-17

4513/4514 Group User’s Manual

(6)

Timer 4 interrupt

Constant period interrupts by a setting value to timer 4 can be used.

Outline: The constant period interrupts by the timer 4 underflow signal can be used.

Specifications: Prescaler, timer 3 and timer 4 divide the system clock frequency f(XIN) = 4.0 MHz,

and the timer 4 interrupt occurs every 250 ms.

Figure 2.2.8 shows a setting example of the timer 4 constant period interrupt.

Fig. 2.2.1 INT0 interrupt operation example

P30/INT0

“H”

“L”

An interrupt occurs after the valid waveform “falling” is detected.

An interrupt occurs after the valid waveform “rising” is detected.

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