CHAPTER 19 STANDBY FUNCTION
User’s Manual U16896EJ2V0UD
577
(3) Oscillation stabilization time selection register (OSTS)
The wait time until the oscillation stabilizes after the STOP mode is released is controlled by the OSTS register.
The OSTS register can be read or written in 8-bit units.
Reset sets this register to 01H.
0
OSTS
0
0
0
0
OSTS2
OSTS1
OSTS0
2
13
/f
X
2
15
/f
X
2
16
/f
X
2
17
/f
X
2
18
/f
X
2
19
/f
X
2
20
/f
X
2
21
/f
X
OSTS2
0
0
0
0
1
1
1
1
Selection of oscillation stabilization time
OSTS1
0
0
1
1
0
0
1
1
OSTS0
0
1
0
1
0
1
0
1
5 MHz
10 MHz
0.819 ms
3.277 ms
6.554 ms
13.11 ms
26.21 ms
52.43 ms
104.9 ms
209.7 ms
4 MHz
2.048 ms
8.192 ms
16.38 ms
32.77 ms
65.54 ms
131.1 ms
262.1 ms
524.3 ms
1.638 ms
6.554 ms
13.11 ms
26.21 ms
52.43 ms
104.9 ms
209.7 ms
419.4 ms
f
X
After reset:
Note
R/W Address: FFFFF6C0H
Note
This register is set to 00H or 01H, depending on the setting of the mask option/option byte.
For details, refer to
CHAPTER 25 MASK OPTION/OPTION BYTE
.
Cautions 1. The wait time following release of the STOP mode does not include the time until the clock
oscillation starts (“a” in the figure below) following release of the STOP mode, regardless
of whether the STOP mode is released by reset or the occurrence of an interrupt request
signal.
a
STOP mode release
Voltage waveform of X1 pin
V
SS
2. Be sure to clear bits 3 to 7 to “0”.
3. The oscillation stabilization time is also inserted during external clock input.
Remark
f
X
: Main clock oscillation frequency
Содержание ?PD703302
Страница 2: ...User s Manual U16896EJ2V0UD 2 MEMO ...