[quote user="PIerluigi Rossetti"]please, i need your help, regard the MSP-FET430U28A, it is an KIT Emulator and programmer .
My question is: this kit is right for to develop on platform MSP430F2121PW.[/quote]MSP-FET430U28A has a MSP-FET430UIF and a MSP-TS430PW28A target board.
MSP-FET430U28 has a MSP-FET430UIF and a MSP-TS430PW28 target board.
Table Table 1-2 of MSP430 Hardware Tools User's Guide SLAU278P shows the following:
Therefore, to develop for a MSP430F2121PW I would say you need a MSP-TS430PW28 target board and therefore a MSP-FET430U28 MSP430 20- and 28-Pin Target board and USB Programmer kit.
