Datasheet

Electrical characteristics STM32F405xx, STM32F407xx
112/202 DocID022152 Rev 8
Electromagnetic Interference (EMI)
The electromagnetic field emitted by the device are monitored while a simple application,
executing EEMBC
?
code, is running. This emission test is compliant with SAE IEC61967-2
standard which specifies the test board and the pin loading.
5.3.14 Absolute maximum ratings (electrical sensitivity)
Based on three different tests (ESD, LU) using specific measurement methods, the device is
stressed in order to determine its performance in terms of electrical sensitivity.
Electrostatic discharge (ESD)
Electrostatic discharges (a positive then a negative pulse separated by 1 second) are
applied to the pins of each sample according to each pin combination. The sample size
depends on the number of supply pins in the device (3 parts × (n+1) supply pins). This test
conforms to the JESD22-A114/C101 standard.
Table 44. EMI characteristics
Symbol Parameter Conditions
Monitored
frequency band
Max vs.
[f
HSE
/f
CPU
]
Unit
25/168 MHz
S
EMI
Peak level
V
DD
= 3.3 V, T
A
= 25 °C, LQFP176
package, conforming to SAE J1752/3
EEMBC, code running from Flash with
ART accelerator enabled
0.1 to 30 MHz 32
dBµV30 to 130 MHz 25
130 MHz to 1GHz 29
SAE EMI Level 4 -
V
DD
= 3.3 V, T
A
= 25 °C, LQFP176
package, conforming to SAE J1752/3
EEMBC, code running from Flash with
ART accelerator and PLL spread
spectrum enabled
0.1 to 30 MHz 19
dBµV30 to 130 MHz 16
130 MHz to 1GHz 18
SAE EMI level 3.5 -
Table 45. ESD absolute maximum ratings
Symbol Ratings Conditions Class
Maximum
value
(1)
Unit
V
ESD(HBM)
Electrostatic discharge
voltage (human body
model)
T
A
= +25 °C conforming to JESD22-A114 2 2000
(2)
V
V
ESD(CDM)
Electrostatic discharge
voltage (charge device
model)
T
A
= +25 °C conforming to
ANSI/ESD STM5.3.1
II 500
1. Guaranteed by characterization.
2. On V
BAT
pin, V
ESD(HBM)
is limited to 1000 V.