參數(shù)資料
型號(hào): μPD78F9418
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 92/128頁
文件大?。?/td> 614K
代理商: ΜPD78F9418
92
μ
PD78F9418
8.2 Standby Function Control Register
The oscillation settling time selection register (OSTS) is used to control the wait time, from the time the STOP
mode is deselected by an interrupt request, until oscillation settles.
The OSTS is manipulated using an 8-bit memory manipulation instruction.
A RESET input loads 04H into the OSTS. If a RESET input is used to deselect STOP mode, the time required
for oscillation to settle will be 2
15
/f
X
, rather than 2
17
/f
X
.
Figure 8-1. Oscillation Settling Time Selection Register Format
OSTS2 OSTS1 OSTS0
OSTS
Symbol
Address
When reset
R/W
FFFAH
04H
R/W
7
6
5
4
3
2
1
0
Oscillation settling time selection
OSTS2
0
0
1
OSTS1
0
1
0
0
0
0
0
OSTS0
0
0
0
2
12
/fx
2
15
/fx
2
17
/fx
Not to be set
(819 s)
(6.55 ms)
(26.2 ms)
Other settings
0
Caution The wait time required to deselect STOP mode does not include the time (“a” in the following
chart) required for the clock oscillation to settle after STOP mode is deselected, regardless of
whether STOP mode is deselected by a RESET input or interrupt.
STOP mode release
X1 pin voltage
waveform
V
SS
a
Remarks 1.
f
X
: Main system clock oscillation frequency
2.
The parenthesized values apply to operation at f
X
= 5.0 MHz.
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