Electrical characteristics
Prequalification trials
STM32F103xC, STM32F103xD, STM32F103xE
Most of the common failures (unexpected reset and program counter corruption) can be
reproduced by manually forcing a low state on the NRST pin or the Oscillator pins for 1
second.
To complete these trials, ESD stress can be applied directly on the device, over the range of
specification values. When unexpected behavior is detected, the software can be hardened
to prevent unrecoverable errors occurring (see application note AN1015).
Electromagnetic Interference (EMI)
The electromagnetic field emitted by the device are monitored while a simple application is
executed (toggling 2 LEDs through the I/O ports). This emission test is compliant with
IEC 61967-2 standard which specifies the test board and the pin loading.
Table 42. EMI characteristics
Max vs. [fHSE/fHCLK
]
Monitored
Symbol Parameter
Conditions
Unit
frequency band
8/48 MHz 8/72 MHz
0.1 to 30 MHz
30 to 130 MHz
130 MHz to 1GHz
SAE EMI Level
8
31
28
4
12
21
33
4
VDD = 3.3 V, TA = 25 °C,
LQFP144 package
compliant with IEC
61967-2
dBµV
-
SEMI
Peak level
5.3.12
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 43. ESD absolute maximum ratings
Symbol
Ratings
Conditions
Class Maximum value(1) Unit
Electrostatic discharge
TA = +25 °C, conforming
V
2
2000
500
ESD(HBM) voltage (human body model) to JESD22-A114
V
Electrostatic discharge
TA = +25 °C, conforming
V
II
ESD(CDM) voltage (charge device model) to JESD22-C101
1. Based on characterization results, not tested in production.
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