I am implementing my first project with SPI communication using the USCI peripheral. I am using the MSP430G2533 and am a little confused by the 3-pin vs 4-pin modes. I know what they are in theory but the application is confusing me.
I have hooked up the SIMO, SOMI and SCK pins and am puzzled by the SS (CE pin on the flash memory MicroChip I am using for external storage). My questions are below.
1. Is the STE input on the MSP430 the same as the SS pin in SPI theory and if I use it would I select 4-pin mode?
2. If the STE pin is being used for something else, can I use a Port pin in output mode? If so would I put the MSP430 in 3-pin or 4-pin mode?
I am sorry if I am way off. Any input would be greatly appreciated.
Take care,
Jon