H8SLASH3003 datasheet(186/715 Pages) RENESAS

No. de pieza	H8/3003

Descripción Electrónicos	microcontroller (MCU)

PDF	715 Pages

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Fabricante Electrónico	RENESAS [Renesas Technology Corp]

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Contention between RTCOR Write and Compare Match: If a compare match occurs in the T3

state of an RTCOR write cycle, writing takes priority and the compare match signal is inhibited.

See figure 7-22.

Figure 7-22 Contention between RTCOR Write and Compare Match

RTCNT Operation at Internal Clock Source Switchover: Switching internal clock sources may

cause RTCNT to increment, depending on the switchover timing. Table 7-9 shows the relation

between the time of the switchover (by writing to bits CKS2 to CKS0) and the operation of

RTCNT.

The RTCNT input clock is generated from the internal clock source by detecting the falling edge

of the internal clock. If a switchover is made from a high clock source to a low clock source, as in

case No. 3 in table 7-9, the switchover will be regarded as a falling edge, an RTCNT clock pulse

will be generated, and RTCNT will be incremented.

RTCOR address

N + 1

Address

RTCNT

RTCOR

RTCOR write cycle by CPU

Internal

write signal

Compare

match signal

Inhibited

RTCOR write data

168

H8/3003 Datasheet(PDF) 186 Page - Renesas Technology Corp