MPC5674F series micro controller output levels

prachi_moghe — Tue, 05 Mar 2019 07:59:00 GMT

Hi,

I am using NXP MPC5674F series microcontroller (Part number: SPC5674FF3MVY3) in the design.

I have a query for output voltage levels for this part.

For V.DDEH supply of 5V, V.OH_S and V.OL_S levels are mentioned considering I.OH_S= 11.6mA and I.OL_S= 17.7mA respectively. (Datasheet Rev. 10.1, 06/2015).

Could you please provide these voltage values for current 1mA or less.

Also please consider following method that I am following.

With Vcc=5V

For low level output voltage level (V.ol)

V.OL= 0.2*Vcc = 1V for I.OL= 17.7 mA (from datasheet)

R.OL= V.OL/I.OL= 56.49 Ohm

With R.OL= 56.49 Ohm and current less than or equal to 1mA,

V.OL_1mA= R.OL*1mA= 56.49 mV

For high level output voltage level (V.oh)

V.OH= 0.8*Vcc = 4V for I.OH= 11.6mA (from datasheet)

R.OH= (Vcc- V.OH)/ I.OH= 86.2 Ohm

With R.OH= 86.2 Ohm and current less than or equal to 1mA,

V.OH_1mA= Vcc - (R.OH* 1mA)= 4.9138 V

Please confirm if this understanding is correct.

Re: MPC5674F series micro controller output levels

lukaszadrapa — Wed, 06 Mar 2019 12:07:55 GMT

Hi,

yes, this characteristic can be linearly extrapolated, so your calculation is correct.

Regards,

Lukas

topic Re: MPC5674F series micro controller output levels in MPC5xxx

MPC5674F series micro controller output levels

Re: MPC5674F series micro controller output levels