STM32F051X4(2012) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F051X4
(Rev.:2012)

Low- and medium-density advanced ARM™-based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces

STMicroelectronics 

Electrical characteristics

STM32F051x

Static latch-up

Two complementary static tests are required on six parts to assess the latch-up

performance:

● A supply overvoltage is applied to each power supply pin

● A current injection is applied to each input, output and configurable I/O pin

These tests are compliant with EIA/JESD 78A IC latch-up standard.

Table 48. Electrical sensitivities

Symbol

Parameter

Conditions

LU

Static latch-up class TA = +105 °C conforming to JESD78A

Class

II level A

6.3.12

I/O current injection characteristics

As a general rule, current injection to the I/O pins, due to external voltage below VSS or

above VDD (for standard, 3 V-capable I/O pins) should be avoided during normal product

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 susceptibility 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 conventional limits of current injection on adjacent pins (lower than –5 µA

or lower than − 10 µA), or other functional failure (for example reset, oscillator frequency

deviation).

The characterization results are given in Table 49.

Table 49. I/O current injection susceptibility

Symbol

Description

Functional susceptibility

Negative

Positive

Unit

injection

injection

Injected current on BOOT0, PF0-OSC_IN

and PF1-OSC_OUT pins

–0

NA

Injected current on PA10, PA12, PB4, PB5,

PB10, PB15 and PD2 with current injection

–5

on adjacent pins > –5 µA and <–10 µA

IINJ

Injected current on other FT and FTf pins

with current injection on adjacent pins

–5

<–5 µA

Injected current on PA6 and PC0 pins

–0

Injected current on all other TTa pins

–5

NA

mA

NA

+5

+5

Injected current on TC and RST pins

–5

+5

68/105

Doc ID 022265 Rev 3

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