option for choose controller

Hi Kishan,

which device you use?

Regards,
Yordan

Hi,

Actually i am asking that which controller should i use,if i want to use 25 gpio as input and 23 gpio as output pin.

Thanks in advance.

Hi Kishan,
Firstly I would like kindly to remind you that this forum is about TI Automotive SoCs (System on Chip). But go ahead and tell us more about your project, I believe many guys here will be happy to help.
I mean, 25 pins for buttons and 23x LEDs - is that correct?
Regarding EEPROM - how many bytes you will need to store there? Which interface you prefer- I2C or SPI? EEPROMs are good because you can read them byte by byte, therefore no real restrictions in microcontrollers exist. Moreover, some micros have some embedded EEPROM inside- you may not need external one.
What your project will do? - That is important so we can tell you if you could save pins and may be other resources.
Will it have other peripherals or interfaces?
Other requirements for the controller? Is the low price the driving requirement?

Regards,
Stan

Hi,

My project is for voting machine.

So,i am confusing about memory size.But require wide range.

Thanks.

Hi,

   I will think about protection later but first i have to know about controller which has many number of GPIOs. So, i can use as buttons and leds.

Thanks.

Kishan,

I didn't ask randomly for how many voters. On how many voters depends how much memory you need. If they will authenticate themselves, you need even more memory. If they will not authenticate, you need to make some protection so they will not vote more than one time.