STEVAL-ISQ002V1 STMicroelectronics, STEVAL-ISQ002V1 Datasheet - Page 136
![BOARD EVAL BASED ON ST72264G1](/photos/9/9/90917/steval-isq002v1_sml.jpg)
STEVAL-ISQ002V1
Manufacturer Part Number
STEVAL-ISQ002V1
Description
BOARD EVAL BASED ON ST72264G1
Manufacturer
STMicroelectronics
Specifications of STEVAL-ISQ002V1
Main Purpose
Interface, PMBus
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ST72F264
Primary Attributes
The PMBus™ Interface Using the ST7 I2C Peripheral
Secondary Attributes
Firmware in C Language
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6423
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISQ002V1
Manufacturer:
STMicroelectronics
Quantity:
1
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ST72260Gx, ST72262Gx, ST72264Gx
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
13.5.3 Crystal and Ceramic Resonator Oscillators
The ST7 internal clock can be supplied with four
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
Figure 71. Typical Application with a Crystal or Ceramic Resonator
Notes:
1. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small R
Refer to crystal/ceramic resonator manufacturer for more details.
136/172
f
R
C
C
i
2
OSC
Symbol
Symbol
F
L1
L2
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
Oscillator Frequency
Feedback resistor
Recommended load capacitance ver-
sus equivalent serial resistance of the
crystal or ceramic resonator (R
OSC2 driving current
C
L2
Parameter
Parameter
C
L1
1)
RESONATOR
S
R
)
D
VLP : Very Low power oscillator
LP: Low power oscillator
MP: Medium power oscillator
MS: Medium speed oscillator
HS: High speed oscillator
R
R
R
R
V
V
OSC1
OSC2
DD
IN
S
S
S
S
=200Ω
=200Ω
=200Ω
=100Ω
=V
=5V
SS
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...).
Conditions
Conditions
R
F
VLP oscillator
LP oscillator
MP oscillator
MS oscillator
HS oscillator
VLP oscillator
LP oscillator
MP oscillator
MS oscillator
HS oscillator
i
2
0.032
Typ
Min
160
310
610
2.5
>2
>4
>8
20
60
38
32
10
10
80
1
ST72XXX
f
OSC
Max
Max
100
100
150
250
460
900
0.1
16
40
47
47
30
2
4
8
5
S
MHz
Unit
Unit
kΩ
pF
µA
value.
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