Hello,
I want to avoid external pull-up resistor on all my input pins because size of board.
I'm using RA6M4. I cannnot find the value of internal pull-up or pull-down of any pin in the datsheet of the MCU.
Can you tell me these values or where can I find them?
Thanks.
Hi David,
Basically, the default setting of pins is no pull-up or pull-down, but if you want to re-confirm, there are some ways:
1, Check the pin setting in FSP
2, Check them in pin_data.c
3, During run time, you can use R_IOPORT_PinCfg to read the pin cfg, it will contain pin configutation.
But if you are using FSP, what you need to do is just to check the pin setting in FSP before developing. It's easy and quick.
Hope it helps,
NP_Renesas
Thanks for the info, but this is not my question. My question is about the value of resistor of pull-up or pull-down.For example, in USB pins there is a pull-up and pull-down resitors:
But for any other pin of the MCU, i have no clue of the value of these resistors.
Hi,
Sorry for misunderstanding your question.
The input is pull-up by MOS, you can see the following picture:
It’s in this section of the datasheet.
These are the values for the RA4M1
yes, but what is the value of the resistor?
Thanks lan, this is what i'm looking for my RA6M4, but I cannot find it in the manual.
In the datasheet, not the manual.
In the datasheet there is no more info than the manual. In datsheet, the only reference to input pull-up is this:
Maybe is not a resistor and is a current driver?
Yeah, the manual and datasheet doesn't show this value, if you are looking for this value for the schematic design, maybe you can take EK-RA6M4's schematic for reference.
I'm looking also for that value for RA6M3 but it's not present in user manual and not present in datasheet.
Where can i get this value?
Thanks Massimo