STM32F103CB STMicroelectronics, STM32F103CB Datasheet - Page 59

• Manufacturer Part Number: STM32F103CB
• Description: Mainstream Performance line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN
• Manufacturer: STMicroelectronics

Specifications of STM32F103CB

• Conversion Range: 0 to 3.6 V
• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs

STM32F103x8, STM32F103xB
5.3.12
I/O current injection characteristics
As a general rule, current injection to the I/O pins, due to external voltage below V
above V
operation. However, in order to give an indication of the robustness of the microcontroller in
cases when abnormal injection accidentally happens, susceptibility tests are performed on a
sample basis during device characterization.
Functional susceptibilty to I/O current injection
While a simple application is executed on the device, the device is stressed by injecting
current into the I/O pins programmed in floating input mode. While current is injected into the
I/O pin, one at a time, the device is checked for functional failures.
The failure is indicated by an out of range parameter: ADC error above a certain limit (>5
LSB TUE), out of spec current injection on adjacent pins or other functional failure (for
example reset, oscillator frequency deviation).
The test results are given in
Table 34.
I
INJ
Symbol
DD
(for standard, 3 V-capable I/O pins) should be avoided during normal product
I/O current injection susceptibility
Injected current on OSC_IN32,
OSC_OUT32, PA4, PA5, PC13
Injected current on all FT pins
Injected current on any other pin
Description
Table 34
Doc ID 13587 Rev 13
Functional susceptibility
Negative
injection
-5
-0
-5
Electrical characteristics
injection
Positive
+0
+0
+5
SS
Unit
mA
or
59/99