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參數(shù)資料
| 型號(hào)： | UPD753104GK |
| 廠商： | NEC Corp. |
| 元件分類(lèi)： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁(yè)數(shù)： | 25/90頁(yè) |
| 文件大?。?/td> | 547K |
| 代理商： | UPD753104GK |
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25
μ
PD753104, 753106, 753108
6.3 Subsystem Clock Oscillator Control Functions
The
μ
PD753108 subsystem clock oscillator has the following two control functions.
Selects by software whether an on-chip feedback resistor is to be used or not
Note
.
Reduces current consumption by decreasing the drive current of the on-chip inverter when the supply voltage
is high (V
DD
≥
2.7 V).
Note
When the subsystem clock is not used, set SOS.0 to 1 (so as not to use the on-chip feedback resistor) by
software, connect XT1 to V
SS
or V
DD
, and open XT2. This makes it possible to reduce the current
consumption in the subsystem clock oscillator.
The above functions can be used by switching the bits 0 and 1 of the sub-oscillator control register (SOS). (See
Figure 6-2.)
Figure 6-2. Subsystem Clock Oscillator
Feedback resistor
SOS.0
SOS.1
XT1
XT2
Inverter
V
DD
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