STM32F101X6_08 STMICROELECTRONICS [STMicroelectronics], STM32F101X6_08 Datasheet - Page 46

• Manufacturer Part Number: STM32F101X6_08
• Description: Access line, advanced ARM-based 32-bit MCU with Flash memory, six 16-bit timers, ADC and seven communication interfaces
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
5.3.10
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EMC characteristics
Susceptibility tests are performed on a sample basis during device characterization.
Functional EMS (Electromagnetic susceptibility)
While a simple application is executed on the device (toggling 2 LEDs through I/O ports). the
device is stressed by two electromagnetic events until a failure occurs. The failure is
indicated by the LEDs:
●
●
A device reset allows normal operations to be resumed.
The test results are given in
defined in application note AN1709.
Table 29.
Designing hardened software to avoid noise problems
EMC characterization and optimization are performed at component level with a typical
application environment and simplified MCU software. It should be noted that good EMC
performance is highly dependent on the user application and the software in particular.
Therefore it is recommended that the user applies EMC software optimization and pre
qualification tests in relation with the EMC level requested for his application.
Software recommendations
The software flowchart must include the management of runaway conditions such as:
●
●
●
Prequalification trials
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).
V
V
Symbol
FESD
EFTB
Electrostatic discharge (ESD) (positive and negative) is applied to all device pins until
a functional disturbance occurs. This test is compliant with the IEC 1000-4-2 standard.
FTB: A Burst of Fast Transient voltage (positive and negative) is applied to V
V
compliant with the IEC 1000-4-4 standard.
Corrupted program counter
Unexpected reset
Critical Data corruption (control registers...)
SS
through a 100 pF capacitor, until a functional disturbance occurs. This test is
Voltage limits to be applied on any I/O pin to
induce a functional disturbance
Fast transient voltage burst limits to be
applied through 100 pF on V
to induce a functional disturbance
EMS characteristics
Parameter
Table
29. They are based on the EMS levels and classes
DD
and V
SS
pins
V
f
conforms to IEC 1000-4-2
V
f
conforms to IEC 1000-4-4
HCLK
HCLK
DD
DD
= 3.3 V, T
= 3.3 V, T
=48 MHz
= 48 MHz
Conditions
A
A
= +25 °C,
= +25 °C,
STM32F101xx
Level/Class
DD
2B
4A
and