TMP91C824
91C824-24
2008-02-20
(2) Change/stop
control
(OK) DFM use mode (f
DFM
)
→
High-frequency oscillator operation mode (f
OSCH
)
→
DFM stop
→
Low-frequency oscillator operation mode (fs)
→
High-frequency
oscillator stop
LD
(DFMCR0),
11------B
;
Change the system clock f
DFM
to f
OSCH
LD
(DFMCR0),
00------B
;
DFM
stop
LD
(SYSCR1),
----1---B
;
Change the system clock f
OSCH
to fs
LD
(SYSCR0),
0-------B
;
High-frequency
oscillator
stop
(Error) DFM use mode (f
DFM
)
→
Low-frequency oscillator operation mode (fs)
→
DFM stop
→
High-frequency oscillator stop
LD
(SYSCR1),
----1---B
;
Change the system clock f
DFM
to fs
LD
(DFMCR0),
11------B
;
Change the internal clock (fc) f
DFM
to f
OSCH
LD
(DFMCR0),
00------B
;
DFM
stop
LD
(SYSCR0),
0-------B
;
High-frequency
oscillator
stop
(OK) DFM use mode (f
DFM
)
→
Set the STOP mode
→
High-frequency oscillator
operation mode (f
OSCH
)
→
DFM stop
→
HALT (High-frequency oscillator stop)
LD
(SYSCR2), ----01--B
;
Set the STOP mode
(This command can execute before use of DFM)
LD
(DFMCR0),
11------B
;
Change the system clock f
DFM
to f
OSCH
LD
(DFMCR0),
00------B
;
DFM
stop
HALT
;
Shift to STOP mode
(Error) DFM use mode (f
DFM
)
→
Set the STOP mode
→
HALT (High-frequency
oscillator stop)
LD
(SYSCR2), ----01--B
;
Set the STOP mode
(This command can execute before use of DFM)
HALT
;
Shift to STOP mode