msp430f235

Hello,

           1 & 2. To load the program  Power, GND, VCore, Reset and Test are mandatory pins.

             3. The externals pins are don't care if you are using internal referene for ADC12.

              4. You have to connect Pin 1 and Pin 64 to Vcc.

             5. TI's datasheet, user guide, code examples for that part would be really helpful.

thanks for your response.......

1. While using 64 pin target board MSP-TS430PM64 some resistor are not connected like  R1,R2,R3,R5,R6,R9..............So what about these resistor?

Are you sure about this?

On my MSP-TS430PM64 target board, R2 connects AVCC to DVCC and should be assembled (0Ohm, or, for a better decoupling of the analog part, 10 to 100Ohm). R1 is is the DVSS/AVSS conenction and should be asselbled too. However, if not using any analog parts (ADC, DAC), AVCC/AVSS are connected to DVCC/DVSS through the clamp diodes and not connecting them will not do any harm.
R3 should be there too, as it is driving the LED.
R5 is the pullup on reset pin and shold be assembled to ensure proper startup if there is no FET attached.
R6 is part of the bootstrap loader and only needs to be assembled if BSL is used (along with R7, R13, R14, R10 and R11)
R9 is onyl needed if you power the board from outside (so the FET can sense the operating voltage) while R8 needs to be removed then (since th eFET is no longer powering the MSP)

However, if you instead have the MSP-TS430PM64A (note the 'A'), things are different.

R1 and R2 are still the same, as is R3.
However, R5 and R9 connect the XIN/XOUT pin with the breakout box. They must not be connected if using a cystal ont he board.
R6 is for the JTAG/SBW switch.

However, the MSP-TS430PM64 is for 14x (and likely 16x) and 41x devices and the A version is for 41x2 devices.
None of them is (at least according to SLAU278F) for the 235. (It still might fit, - I didn't compare the pinout)

Sir I don,t have any chip resistor (SMD components) of 10 ohm or 100 ohm to connect R1 and R2. Can I do it using through lead resistor?

If I do not connect R1 and R2 but giving power supply directly at Avss and Avcc pin. Will it affect the performance?

0 Ohm is fine in most cases (especially on an experimenters board with a socket for the CPU)

Using a few Ohm jsu tdecouples AVCC from DVCC, so current ripples on the DVCC signal won't propagate into the analog circuitry supply. For similar reasons, you usually route AVSS separate form DVSS to the power supply.
However, many MSPs don't have separate AVCC/AVSS at all. And even if, for experiments it is still okay. But it does affect the precision of the internal reference and some other things (e.g. GND reference level). Whether this is a problem depends on the application.

Of course you can use a lead resistor, but the result will be sensitive to mechanical failure.
You can directly give power to AVCC and DVCC (as long as the two do not differ more than 0.2V at any time), or directly connect the two pins (which is what a 0Ohm resistor does)

If you don't draw power form the analog circuitry, you can even leave AVCC unconnected (AVSS should be connected, to have a stable negative reference). It will, however, slightly affect performance too.