I have a msp430a320 microcontroler . I want to connect a DS1820 temperature senzor to the msp430 .I haven't connected them phisically yet , but I found in the documentation a scheme which is described below:
Vdd from senzor goes to SVcc of the msp430 , GND from senzor goes to Gnd of the msp430 and DQ (data ) from senzor goes to P0.Y (from digital signals pins group) of the msp430 . So my senzor could be powered from the msp430 , the only problem is that when I put the voltmeter between GND and SVcc of the msp430 ,I get nothing (the needle doesn't move), and I should get 5V , so I won't be able to power my DS1820 senzor when I'll connect it phisically to the msp430
. The msp430 was connected to the computer via serial and a demo program was running when I made the measurement . Is it possible that SVcc 5V should be enabled from program or something like that ? If not then where should I enable it from ?
Vdd from senzor goes to SVcc of the msp430 , GND from senzor goes to Gnd of the msp430 and DQ (data ) from senzor goes to P0.Y (from digital signals pins group) of the msp430 . So my senzor could be powered from the msp430 , the only problem is that when I put the voltmeter between GND and SVcc of the msp430 ,I get nothing (the needle doesn't move), and I should get 5V , so I won't be able to power my DS1820 senzor when I'll connect it phisically to the msp430