參數(shù)資料
型號： ST72C171
廠商： 意法半導體
英文描述： 8-BIT MCU with 8K FLASH, ADC, WDG, SPI, SCI, TIMERS SPGAs Software Programmable Gain Amplifiers, OP-AMP
中文描述： 8位8K閃存，ADC的，水分散粒劑，SPI和脊髓損傷，定時器SPGAs軟件可編程增益放大器，運算放大器控制器
文件頁數(shù)： 124/152頁
文件大?。?/td> 1384K
代理商： ST72C171
ST72C171
124/152
9.7 EMC CHARACTERISTICS
Susceptibility tests are performed on a sample ba-
sis during product characterization.
9.7.1 Functional EMS
(Electro Magnetic Susceptibility)
Based on a simple running application on the
product (toggling 2 LEDs through I/O ports), the
product is stressed by two electro magnetic events
until a failure occurs (indicated by the LEDs).
– ESD: Electro-Static Discharge (positive and neg-
ative) is applied on all pins of the device until a
functional disturbance occurs. This test con-
forms with the IEC 1000-4-2 standard.
– FTB: A Burst of Fast Transient voltage (positive
and negative) is applied to V
DD
and V
SS
through
a 100pF capacitor, until a functional disturbance
occurs. This test conforms with the IEC 1000-4-
4 standard.
A device reset allows normal operations to be re-
sumed.
Figure 73. EMC Recommended star network power supply connection
2)
Notes:
1. Data based on characterization results, not tested in production.
2. The suggested 10nF and 0.1
μ
F decoupling capacitors on the power supply lines are proposed as a good price vs. EMC
performance tradeoff. They have to be put as close as possible to the device power supply pins. Other EMC recommen-
dations are given in other sections (I/Os, RESET, OSCx pin characteristics).
Symbol
Parameter
Conditions
Neg
1)
Pos
1)
Unit
V
FESD
Voltage limits to be applied on any I/O pin
to induce a functional disturbance
Fast transient voltage burst limits to be ap-
plied through 100pF on V
DD
and V
DD
pins
to induce a functional disturbance
V
DD
=
5V, T
A
=
+25°C, f
OSC
=
8MHz
conforms to IEC 1000-4-2
-1
1
kV
V
FFTB
V
DD
=
5V, T
A
=
+25°C, f
OSC
=
8MHz
conforms to IEC 1000-4-4
-4
4
V
DD
V
SS
0.1
μ
F
10nF
V
DD
ST72XXX
V
SSA
V
DDA
0.1
μ
F
POWER
SUPPLY
SOURCE
ST7
DIGITAL NOISE
FILTERING
EXTERNAL
NOISE
FILTERING
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