Current consumption of FT pin (error in datasheet?)

RWeil.2 · ‎2023-11-02

Hi,

is there an error in the datasheet? The data seems counterintuitive:

FT pin input leakage current (max.) is
- 150 nA for 0 to VDD
-2500 nA for VDD to VDD+1V
-250 nA for VDD+1V to 5,5V

Shouldn´t the last value be in uA perhaps?

Kind regards
René

Remi QUINTIN · ‎2023-11-07

There is no error. it is indeed nA as unit.

The reason of a higher leakage when VDD is in the window VDD max -> VDD max + 1V is the mechanism managing the 5V tolerance of the pin. This mechanism is less optimized in this window than in the window VDD max +1V -> 5.5V where all transistors ensuring the 5V tolerance are well biased, thus generating a lower leakage.

View solution in original post

Sarra.S · ‎2023-11-02

Hello @RWeil.2,

I'm checking this internally, I will get back to you.

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

Remi QUINTIN · ‎2023-11-07

There is no error. it is indeed nA as unit.

The reason of a higher leakage when VDD is in the window VDD max -> VDD max + 1V is the mechanism managing the 5V tolerance of the pin. This mechanism is less optimized in this window than in the window VDD max +1V -> 5.5V where all transistors ensuring the 5V tolerance are well biased, thus generating a lower leakage.

RWeil.2 · ‎2023-11-08

Thank you for the clarification!