SM320F2812-EP: Max input voltage and current allowed on SM320F2812-EP A/D pins when Vcc is zero volts

Julio Zamora

Part Number: SM320F2812-EP

Tool/software:

On the A/D pins the current is limited by 10k external resistors in the design. Is there any risk of damaging the device if Vcc is zero volts when 2.5V (max) is applied to A/D pins for a few ms (2 to 3ms) during power up?

Thanks

4 months ago

0 Delaney Woodward 4 months ago

TI__Genius 11300 points

Hello,

The expert on this topic is currently out of office until Tuesday 9/3, so please expect a delayed response. I apologize for any inconvenience.

Best Regards,
Delaney

0 Benjamin Collier 4 months ago

TI__Mastermind 30891 points

Hi,

If a 10k Ohm resistor is placed between the 2.5V source and the MCU pin, this should be fine. Current will not be high enough to damage the MCU.

Best Regards,

Ben Collier

C2000™︎ microcontrollers

C2000 microcontrollers forum

SM320F2812-EP: Max input voltage and current allowed on SM320F2812-EP A/D pins when Vcc is zero volts