Hi,
I'm making test some on the famous LPC1114FN28 is there somebody who have some experience about it ?Please, thank for sharing here
Here is the beast
And the pinout informations
Instead of using 7-segment displays, you can connect a cute SPI display like this:
1 44" Serial LCD Display 128 128 SPI TFT Color Screen with PCB Adapter 5110
-If you're already using the SPI for something else, then it only requires 3 extra pins, otherwise it'll require 6 pins total.
I used something similar for my own projects.
However, when using it as an educational tool, trying to explain to begineers about the initialization sequence for such display could be a bit hard.
(Also, it is more than 3 pins - SCLK, MOSI, CS, D/C, RESET, optionally MISO).
For the tiny project with educational, i use the famous DIP 8 LCP810 or Or Mbed ST nucleo like to explain the link between electronic & computer science. But a 20 pins is more usefull for demonstration.
Yes, I know 7-segment (LEDs) are simpler and easier to work with and you either have to set up the SPI or toggle the I/O pins manually.
-But it's good when you need to save pins.
Since there are very few Cortex-based DIP, it might be a good idea to acquire an I/O-expander (these exists in DIP as well).
I/O-expanders can be connected via I2C or SPI, depending on the type.
You usually get 8 or 16 extra I/O pins that way, and you can add up to 8 I/O-expanders from one vendor and 8 I/O expanders from another vendor (because the addressing often differ) if required. Example: Use 8 I/O-expanders from NXP and 8 I/O-expanders from Microchip. Let's see, that gives us 16*16 extra pins at the cost of 2 I2C pins, which means we get 254 extra pins... And we'll of course use a lot more power.