Breadboard friendly PGA


Author Message
JanVolk
Guru

Joined: 28/01/2023
Location: Netherlands
Posts: 410
Posted: 06:47pm 28 Aug 2024      

Mixtel90

You're doing well. The PGA2350 is on its way and the Raspberry Pi Pico 2 is currently being tested with PicoMite MMBasic version 6.00.00b0.
The current has been tested and is already a lot less and if the sleep mode is used, possibly even lower?
RP2040: 420MHz 82mA, 378MHz 76mA, 252MHz 50mA, 133MHz 28mA, 48MHz 13mA.
RP2350: 420MHz invalid, 378MHz 57mA, 252MHz 37mA, 150MHz 20mA, 48MHz 9mA. (Current only goes from high to low frequency to a lower current value after reset)
I saw that the PGA2350 fits exactly on a breadboard (breadboards are 12 pins wide) and there is still a pin left on both sides for the plugs on the board.
Only then extend the outer row of pins downwards and the rest upwards.
You could also take advantage of this with your PCB by choosing female PCB pin holders with long pins and shortening the inner pins or customizing some pins with long pins and the rest normal ones.
This way your PCB becomes 10 pins shorter on a breadboard and all strips on the breadboard can be used and the print pins run normally, creating a normal PCB with a row of pins at the bottom.
The width is not correct for the PCB because the pin hole on breadboard is not accessible?
An SD card holder would also be nice, which could possibly find a place under the micro USB on the PCB or vice versa or somewhere on the PCB where the card is easily accessible?
For the time being, 16MB FLASH and 8MB PSRAM are enough, but an SD is very useful for mutual exchange.
Keep up the good work and you will be doing an excellent job for the community.

Jan.