Product data

HD404818 Series
32
MIS2 MIS1 MIS0
t
RC
selection
Refer to
table 20
MIS: $00C
MIS
1 Bit 0 Bit
00
01
10
11
T
0.24414 ms
15.625 ms
62.5 ms
Not used
—
0.12207 ms
0.24414 ms
7.8125 ms
31.25 ms
Oscillation circuit
condition
External clock input
Ceramic or crystal
oscillator
Notes:
RC
1
2
t
RC
1
1. The value of t applies only when using
a 32.768-kHz oscillator.
2. Only direct transfer.
*
*
*
Figure 13 Miscellaneous Register
Direct Transfer: By controlling the DTON, the MCU can be placed directly from subactive to active
mode. The detailed procedure is as follows:
• Set the DTON flag in subactive mode while LSON = 0.
• Execute the STOP or SBY instruction.
• After the oscillation stabilization time (a fixed value), the MCU will move automatically from subactive
to active mode.
Note that DTON ($020, bit 3) is valid only in subactive mode. When the MCU is in active mode, this flag
is always at reset.
The transition time (t
D
) from subactive to active mode is t
RC
< t
D
< T + t
RC
.
Subactive mode
Interrupt
strobe
Direct transfer
timing
Internal
execution
time (< T)
Oscillation
stabilization
time
Active mode
T
t
RC
T:
t :
RC
STOP/SBY
execution
(LSON = 0, DTON = 1)
Interrupt frame period
Oscillation stabilization period
Figure 14 Direct Transfer Timing
MCU Operating Sequence: The MCU operates in the sequence shown in figures 15 to 17. It is reset by an
asynchronous RESET input, regardless of its state.