SH7041A datasheet(364/923 Pages) RENESAS

부품명	SH7041A

상세설명	Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

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제조업체	RENESAS [Renesas Technology Corp]

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Counting mode selection

Select counter clock

Periodic counter

Select counter

clear source

Select output

compare register

Set period

Start counting

Free-running counter

Periodic counter

Free-running counter

Figure 12.7 Procedure for Selecting the Counting Operation

Free-Running Counter Operation Example: A reset of the MTU timer counters (TCNT) leaves

them all in the free-running mode. When a bit in the TSTR is set to 1, the corresponding timer

counter operates as a free-running counter and begins to increment. When the count overflows

from H'FFFF–H'0000, the TCFV bit in the timer status register (TSR) is set to 1. If the TCIEV bit

in the timer’s corresponding timer interrupt enable register (TIER) is set to 1, the MTU will make

an interrupt request to the interrupt controller. After the TCNT overflows, counting continues from

H'0000. Figure 12.8 shows an example of free-running counter operation.

CST bit

TCNT value

Time

H'FFFF

H'0000

TCFV

Figure 12.8 Free-Running Counter Operation

SH7041A 데이터시트(PDF) 364 Page - Renesas Technology Corp