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68HC705SP7 데이터시트(PDF) 71 Page - Freescale Semiconductor, Inc

부품명 68HC705SP7
상세설명  General Release Specification
PDF  230 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

68HC705SP7 데이터시트(HTML) 71 Page - Freescale Semiconductor, Inc

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Operating Modes
Low-Power Modes
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
General Release Specification
Operating Modes
Therefore, the lowest power is consumed when OM1 is cleared. The
state with both OM1 and OM2 set is provided so that the EPO can be
started up and allowed to stabilize while the LPO still clocks the MCU.
NOTE:
When switching from LPO to EPO, the user must be careful to ensure
that the EPO has been enabled and powered up long enough to stabilize
before shifting clock sources.
IRQF — External Interrupt Request Flag
The IRQF flag is a clearable, read-only bit that is set when an external
interrupt request is pending. Refer to Section 4. Interrupts for more
details.
IRQR — Interrupt Request Reset
This write-only bit clears the IRQF flag bit and prevents redundant
execution of interrupt routines. Refer to Section 4. Interrupts for
more details.
6.4 Low-Power Modes
Four modes of operation reduce power consumption:
•
Stop mode
•
Wait mode
•
Halt mode
•
Data-retention mode
Figure 6-2 shows the sequence of events in stop, wait, and halt modes.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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