How do I discern Maidenhead Locator from GPS lat long info.

[richard]

The project as i have it in mind need to have an SD in order to store the Data from GPS Nmea.

I found out that only a microcontroller with 48mhz supports something like that

where did you find that , its not what I understand the case to be. are you confusing usb support for sd card support ?

May i use the same speed for All the peripherals SD, Ulcd, GPS? Or do i need to specify different one for each module?

unless you specify what spi rate the sd card supports and what sd card system you intend to use [sdfs3 ? fat16? fat 32?] along with
the baud rate used for the serial I/f's and your osc speed it would be guesswork only.

Could You help me and clarity what i need for each GPS, SD, Ulcd?

not really you need to supply a lot more info

i need to communicate Serial with GPS module and then i need to store the raw Nmea Data to SD and display what i need from the Nmea protocols to display

compared to PIC18F4550 or PIC18F2550 a pic 18f26k22 has two times the flash memory , sram ,spi ports, eusarts has more timers and can run at 64 MHz . I think it would be a good fit
for that sort of project