参数资料
型号: ST62P15CM3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: MICROCONTROLLER, PDSO28
封装: PLASTIC, SOP-28
文件页数: 78/105页
文件大小: 1412K
代理商: ST62P15CM3
ST6215C/ST6225C
74/105
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.
Only parallel resonant crystals can be used. All the
information given in this paragraph are based on
characterization results with specified typical ex-
ternal components. Refer to the crystal/ceramic
resonator manufacturer for more details (frequen-
cy, package, accuracy...).
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 (<50s).
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
Symbol
Parameter
Conditions
Typ
Unit
RF
Feedback resistor
3
M
CL1
CL2
Recommended load capacitances versus equiva-
lent crystal or ceramic resonator frequency
fOSC=32 kHz,
fOSC=1 MHz
fOSC=2 MHz
fOSC=4 MHz
fOSC=8 MHz
120
47
33
22
pF
Oscillator
Typical Crystal or Ceramic Resonators
CL1
[pF]
CL2
[pF]
tSU(osc)
[ms] 1)
Reference
Freq.
Characteristic 1)
Ceram
ic
M
URA
TA
CSB455E
455KHz
f
OSC=[±0.5KHztolerance,±0.3%
Ta,±0.5%aging]
220 220
CSB1000J
1MHz
f
OSC=[±0.5KHztolerance,±0.3%
Ta,±0.5%aging]
100 100
CSTCC2.00MG0H6
2MHz
f
OSC=[±0.5%tolerance,±0.5%
Ta,±0.3%aging]47
47
CSTCC4.00MG0H6
4MHz
f
OSC=[±0.5%tolerance,±0.3%
Ta,±0.3%aging]47
47
CSTCC8.00MG
8MHz
f
OSC=[±0.5%tolerance,±0.3%
Ta,±0.3%aging]15
15
OSCOUT
OSCIN
CL1
CL2
RF
ST62XX
RESONATOR
VDD
FOSC
1
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