ST7FLITE29 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7FLITE29
STMicroelectronics
'ST7FLITE29' PDF : 133 Pages View PDF
ST7LITE2
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
13.5.3 Crystal and Ceramic Resonator Oscillators
The ST7 internal clock can be supplied with eight
different Crystal/Ceramic resonator oscillators. All
the information given in this paragraph are based
on characterization results with specified typical
external components. In the application, the reso-
nator and the load capacitors have to be placed as
close as possible to the oscillator pins in order to
minimize output distortion and start-up stabiliza-
tion time. Refer to the crystal/ceramic resonator
manufacturer for more details (frequency, pack-
age, accuracy...).
Symbol
fCrOSC
CL1
CL2
Parameter
Crystal Oscillator Frequency 1)
Recommended load capacitance ver-
sus equivalent serial resistance of the
crystal or ceramic resonator (RS)
Conditions
Min
Typ
Max
2
16
See table below
Unit
MHz
pF
Supplier
fCrOSC
[MHz]
2
4
8
16
Typical Ceramic Resonators2)
Type3)
Reference
SMD CSTCC2M00G56-R0
SMD CSTCR4M00G53-R0
LEAD CSTLS4M00G53-B0
SMD CSTCE8M00G52-R0
LEAD CSTLS8M00G53-B0
SMD CSTCE16M0V51-R0
LEAD CSTLS16M0X53-B0
LEAD CSALS16M0X55-B0
CL1 4)
[pF]
(47)
(15)
(15)
(10)
(15)
(5)
(15)
7
CL2 4)
[pF]
(47)
(15)
(15)
(10)
(15)
(5)
(15)
7
Rd Supply Voltage Temperature
[Ω] Range [V]
Range [°C]
0
0
0 2.4V to 5.5V
0
0
0 3.3V to 5.5V
0 4.5V to 5.5V
1.5k 3.8V to 5.5V
-40 to 85
Notes:
1. When PLL is used, please refer to the PLL characteristics chapter and to “SUPPLY, RESET AND CLOCK MANAGE-
MENT” on page 23 chapter (fCrOSC min. is 8 Mhz with PLL).
2. Resonator characteristics given by the ceramic resonator manufacturer. For more information on these resonators,
please consult www.murata.com
3. SMD = -R0: Plastic tape package (∅ =180mm) .
LEAD = -B0: Bulk
4. () means load capacitor built in resonator
Figure 66. Typical application with a crystal or ceramic resonator
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
i2
CL1
OSC1
fOSC
RESONATOR
CL2
OSC2
Rd
ST7LITE2
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