ST7LITE09 datasheet(119/122 Pages) STMICROELECTRONICS

119 / 122 page

ERRATA SHEET

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20.2 ADC CONVERSION SPURIOUS RESULTS

Spurious conversions occur with a rate lower than 50 per million. Such conversions happen

when the measured voltage is just between 2 consecutive digital values.

Workaround

A software filter should be implemented to remove erratic conversion results whenever they

may cause unwanted consequences.

20.3 FUNCTIONAL ESD SENSITIVITY

The ST7LITE0 and ST7SUPERLITE, when configured with High or Medium LVD threshold,

are below the STMicroelectronics functional sensitivity standard. When positive stress is in-

jected on I/Os, the LVD reset is activated, but normal operation resumes after reset.

As a consequence, the application should be well protected against ESD. The firmware may

also be designed to allow warm reset, as described in EMC application note AN1015, allowing

the application to resume normal operation after a reset.

This does not affect ESD absolute maximum ratings: the ST7LITE0 and ST7SUPERLITE

meet STMicroelectronics standards concerning ESD levels that may cause damage to the sil-

icon. Devices configured without LVD and with the Low LVD threshold level are not impacted.

ST7LITE09 数据表(PDF) 119 Page - STMicroelectronics