ST62T09LD1/SWD View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST62T09LD1/SWD
STMicroelectronics
ST62T09LD1/SWD Datasheet PDF : 105 Pages
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ST6208C/ST6209C/ST6210C/ST6220C
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
11.5.3 Crystal and Ceramic Resonator Oscillators
The ST6 internal clock can be supplied with sever-
al different Crystal/Ceramic resonator oscillators.
All the information given in this paragraph are
based on characterization results with specified
typical external components. Refer to the crystal/
ceramic resonator manufacturer for more details
(frequency, package, accuracy...).
Symbol
RF
CL1
CL2
Parameter
Feedback resistor
Conditions
fOSC=32kHz,
Recommended load capacitances versus equiva-
lent crystal or ceramic resonator frequency
fOSC=1MHz
fOSC=2MHz
fOSC=4MH
fOSC=8MHz
Typ
Unit
3
MΩ
120
47
33
pF
33
22
Oscillator
Typical Crystal or Ceramic Resonators
Reference
Freq.
Characteristic 1)
CSB455E
CSB1000J
CSTCC2.00MG0H6
CSTCC4.00MG0H6
CSTCC8.00MG
455KHz
1MHz
2MHz
4MHz
8MHz
∆fOSC=[±0.5KHztolerance,± 0.3%∆Ta,± 0.5%agin g]
∆fOSC=[±0.5KHztolerance,± 0.3%∆Ta,± 0.5%agin g]
∆fOSC=[±0.5%tolerance,±0.5%∆Ta,±0.3%aging]
∆fOSC=[±0.5%tolerance,±0.3%∆Ta,±0.3%aging]
∆fOSC=[±0.5%tolerance,±0.3%∆Ta,±0.3%aging]
CL1 CL2 tSU(osc)
[pF] [pF] [ms] 1)
220 220
100 100
47 47
47 47
15 15
Notes:
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2. tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a
quick VDD ramp-up from 0 to 5V (<50µs).
3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small RS value.
Refer to crystal/ceramic resonator manufacturer for more details.
Figure 50. Typical Application with a Crystal or Ceramic Resonator
VDD
CL1
OSCIN
RES ONATOR
CL2
RF
OSCOUT
FOSC
ST62XX
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