參數(shù)資料
型號: S1C63406D0A0100
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, UUC103
封裝: DIE-103
文件頁數(shù): 80/151頁
文件大?。?/td> 1171K
代理商: S1C63406D0A0100
26
EPSON
S1C63406/408 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Oscillation Circuit)
4.3.2 OSC1 oscillation circuit
The OSC1 oscillation circuit generates the main clock for the CPU and the peripheral circuits. Either
crystal or CR can be selected for the oscillator type by mask option. The oscillation frequency of the
crystal oscillation circuit is 32.768 kHz (Typ.) and the CR oscillation circuit is 60 kHz (Typ.).
This circuit operates with the VOSC (1.3 V Typ.) voltage output from the oscillation system voltage
regulator.
Figure 4.3.2.1 is the block diagram of the OSC1 oscillation circuit.
VSS
CGX
X'tal1
OSC2
OSC1
R
FX
R
DX
CDX
To CPU
(and peripheral circuits)
VSS
OSC2
OSC1
CCR
To CPU
(and peripheral circuits)
R
CR1
(a) Crystal oscillation circuit
(b) CR oscillation circuit
Fig. 4.3.2.1 OSC1 oscillation circuit
As shown in Figure 4.3.2.1, the crystal oscillation circuit can be configured simply by connecting the
crystal oscillator (X'tal1) of 32.768 kHz (Typ.) between the OSC1 and OSC2 terminals and the trimmer
capacitor (CGX) between the OSC1 and VSS terminals when crystal oscillation is selected.
The CR oscillation circuit can be configured simply by connecting the resistor RCR1 between the OSC1
and OSC2 terminals when CR oscillation is selected. See Chapter 7, "Electrical Characteristics" for resis-
tance value of RCR1.
Notes: The current consumption of CR oscillation is larger than crystal oscillation.
Be aware that the CR oscillation frequency changes slightly.
Pay special attention to the circuits that use fOSC1 as the source clock, such as the timer (time
lag) and the LCD frame frequency (display quality, flicker in low frequency).
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