HD404339FS datasheet(23/80 Pages) RENESAS

tên linh kiện	HD404339FS

Giải thích chi tiết về linh kiện	microcomputer with large-capacity memory designed to

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HD404339 Series

In stop mode, the system oscillator is stopped. To ensure a proper oscillation stabilization period of at least

RC when clearing stop mode, execute the cancellation according to the timing chart in figure 12.

In watch and subactive modes, a timer A or

INT

0 interrupt can be accepted during the interrupt frame

period T (see figure 13).

Note:

In watch and subactive modes, an interrupt will not be properly detected if the

INT

0 high or low

level period is shorter than the interrupt frame period T. Thus, when operating in watch and

subactive modes, maintain the

INT

0 high or low level period longer than period T to ensure

interrupt detection.

Stop mode

Oscillator

Internal

clock

STOP instruction execution

tres ≥ tRC (stabilization period)

tres

RESET

STOPC

Figure 12 Timing of Stop Mode Cancellation

Active mode

Interrupt strobe

Watch mode

Oscillation

stabilization

period

Active mode

Interrupt frame length

Oscillation stabilization period

INT0

Interrupt request

generation

(During the transition

from watch mode to

active mode only)

T + tRC ≤ TX ≤ 2T + tRC

Figure 13 Interrupt Frame

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