參數(shù)資料
型號: UPD753012GC
廠商: NEC Corp.
元件分類: 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
文件頁數(shù): 23/80頁
文件大?。?/td> 569K
代理商: UPD753012GC
23
μ
PD753012, 753016, 753017
6.3 Subsystem Clock Oscillator Control Functions
The
μ
PD753017 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 current
is high (V
DD
2.7 V).
Note
When not using the subsystem clock, set SOS.0 to 1 in software (on-chip feedback resistor is not used),
connect XT1 to V
SS
, and leave XT2 unconnected, so that the current consumption of the subsystem clock
oscillator can be reduced.
The above functions can be used by switching the bits 0 and 1 of the sub-oscillator control register (SOS).
(Refer to
Figure 6-2
.)
Figure 6-2. Subsystem Clock Oscillator
Feedback resistor
SOS.0
SOS.1
XT1
XT2
Inverter
PD753017
μ
V
DD
V
DD
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