
S1S60000 Technical Manual
68
EPSON
Rev.1.5
8.6
Oscillation Characteristics
Oscillation characteristics can vary depending various factors (such as parts used and substrate patterns).
Following capacitance is for your information only.
In particular, when using ceramic or crystal transducers,
maker specified constants of components such as capacitance and resistance should be strictly observed.
OSC1 crystal oscillation
(Except where otherwise specified: Crystal transducer=C-002RX*1 32.768kHz, Rf1=20M
, CG1=CD1=15pF*2)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Note
Operating temperature
Ta
VDD=3.0 to 3.6V
-40
-
85
°C
*1 C-002RX: Crystal transducer from Seiko Epson
*2 CG1=CD1=15pF includes capacitance of substrate.
(Except where otherwise specified: VDD=3.3V, VSS=0V, Crystal transducer = C-002RX*1 32.768kHz, Rf1=20M
, CG1=CD1=15pF*2, Ta=25°C)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Note
Oscillation start time
tSTA
-
3
sec
Capacitance of external gate
and drain
CG1,CD1 C
G1
=CD1, including capacitance
of substrate
5
-
25
pF
Frequency IC deviation
f/IC
-10
-
10
ppm
Frequency supply voltage
deviation
f/V
-10
-
10
ppm/V
Frequency adjustment range
f/CG CG1=CD1=5 to 25pF
50
-
ppm
*1 C-002RX: Crystal transducer from Seiko Epson
*2 CG1=CD1=15pF includes capacitance of substrate.
OSC3 crystal oscillation
Note: For OSC3 crystal oscillation circuit, “a crystal transducer that operates on the fundamental frequency”
must be used.
(Except where otherwise specifiedVSS=0V, crystal transducer =MA-306*1 25.000MHz, Rf1=20M
,CG1=CD1=15pF*2)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Note
Oscillation start time
tSTA3
VDD=3.3V
-
10
ms
*1 MA-306: Crystal transducer from Seiko Epson
*2 CG1=CD1=15pF includes capacitance of substrate.
OSC3 ceramic oscillation
(Except where otherwise specifiedVSS=0V, Ta=25°C)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Note
Oscillation start time
tSTA3
25MHz ceramic transducer
-
5
ms
1
Note: No Ceramic transducer
Recommended constant
Supply
voltage
Remarks
Type name
CG2(pF)
CD2(pF)
Rf2(M) Range (V)
1 CST25.00MXW0H1
5
1
2.7 to 3.6 Ceramic transducer from
Murata Manufacturing
*1 Frequency tends to become higher by 0.3.
8.7
PLL Characteristics
(Except where otherwise specified:VDD=3.0 to 3.6V,VSS=0V, Crystal transducer =SG-8002*1,C1=100pF,C2=5pF,Ta=-40 to
+85°C)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Note
Jitter (Peak jitter)
tpj
-1
-
1
ns
Lockup time
tpll
-
1
ms
*1 SG-8002: Crystal transducer from Seiko Epson