Toshiba TMP91C824F Data Book page 27

（２） Change / Stop Control
(OK) DFM use mode (f
→ Low frequency oscillator operation mode(f
LD (DFMCR0),11------B
LD (DFMCR0),00------B
LD (SYSCR1), ----1---B
LD (SYSCR0), 0-------B
(NG) DFM use mode (f
→High frequency oscillator stop
LD (SYSCR1), ----1---B
LD (DFMCR0),11------B
LD (DFMCR0),00------B
LD (SYSCR0), 0-------B
(OK) DFM use mode (f
→High frequency oscillator operation mode (f
oscillator stop)
LD (SYSCR2), ----01--B
LD (DFMCR0),11------B
LD (DFM CR0),00------B
HALT
(NG) DFM use mode (f
LD (SYSCR2), ----01--B
HALT
)→ High frequency oscillator operation mode(f
DFM
; Change the system clock f
; DFM stop
; Change the system clock f
; High frequency oscillator stop
)→ Low frequency oscillator operation mode(f
DFM
; Change the system clock f
; Change the internal clock (f
; DFM stop
; High frequency oscillator stop
)→Set the STOP mode
DFM
; Set the STOP mode
(This command can execute before use of DFM)
; Change the system clock f
; DFM stop
; Shift to STOP mode
)→Set the STOP mode→ HALT(High frequency oscillator stop)
DFM
; Set the STOP mode
(This command can execute before use of DFM)
; Shift to STOP mode
91C824-24
OSCH
)→High frequency oscillator stop
s
to f
DFM
to fs
OSCH
)→ DFM stop
s
to f
DFM
) f
C DFM to
)→ DFM stop→ HALT(High frequency
OSCH
to f
DFM
TMP91C824
)→ DFM Stop
OSCH
S
f
OSCH
OSCH