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HD404339FS 데이터시트(PDF) 24 Page - Renesas Technology Corp

부품명 HD404339FS
상세설명  microcomputer with large-capacity memory designed to
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD404339FS 데이터시트(HTML) 24 Page - Renesas Technology Corp

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HD404339 Series
22
The MCU automatically provides an oscillation stabilization period t
RC when operation switches from
watch mode to active mode. The interrupt frame period T and one of three values for t
RC can be selected
with the miscellaneous register (MIS: $00C), as listed in figure 14.
Operation can switch directly from subactive mode to active mode, as illustrated in figure 15. In this case,
the transition time T
D obeys the following relationship.
t
RC < TD < T + t RC
Bit
Initial value
Read/Write
Bit name
3
0
W
MIS3
2
0
W
MIS2
0
0
W
MIS0
1
0
W
MIS1
Miscellaneous register (MIS: $00C)
MIS1
0
MIS0
T*1
0
0.24414 ms
tRC*1
0.12207 ms
0.24414 ms*2
7.8125 ms
62.5 ms
Oscillation Circuit Conditions
External clock input
Ceramic oscillator
0
1
1
1
0
1
15.625 ms
125 ms
Not used
—
Notes: 1.
2.
The values of T and tRC are applied when a 32.768-kHz crystal oscillator is used.
The value is applied only when direct transfer operation is used.
Buffer control.
Refer to figure 24.
MIS3
MIS2
Crystal oscillator
Figure 14 Miscellaneous Register



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