mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 82
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mc68hc05l25
Manufacturer Part Number
mc68hc05l25
Description
M68hc05 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC05L25.pdf
(152 pages)
- Current page: 82 of 152
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Oscillators and Clock
82
NOTES:
1. When switching from state E to state D, the FTUP bit in the MISC register must be set.
2. When switching from state D to state E, the STUP bit in the MISC register must be set.
STATE B
XOSC:ON
CPU:RUN
φ2:OSC/4
OSC:ON
φ2 = BUS CLOCK
STATE A
STATE E
WHEN STUP = 1
STATE D
Figure 8-5. Clock State and STOP/POD Delay Diagram
FOSCE = 0
φ2:XOSC/2
φ2:XOSC/2
XOSC:ON
XOSC:ON
XOSC:ON
CPU:RUN
φ2:OSC/2
CPU:RUN
CPU:RUN
OSC:OFF
OSC:ON
OSC:ON
MC68HC05L25 Data Sheet, Rev. 3.1
WHEN FTUP = 1
FOSCE = 1
POWER ON
φ2:OSC/64
XOSC:ON
CPU:RUN
OSC:ON
STATE C
STOP
A
B
C
D
E
HIGH SPEED
LOW POWER
DELAY
RESET
RESET, INT
INT
RESET
INT
STOP
INT
STATE D
STATE E
STATE A
STATE B
STATE C
STOP
Freescale Semiconductor
STOP
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