Data sheet - part II.5
When you were reviewing page 6 of the SX data sheet you might have noticed the pins labeled Vdd and Vss. These pins are the power pins of the chip. The SX can have a voltage from 2.7V to 5.5V DC on its power pins. The minimum voltage allowed is a function of the frequency that the device is operating at. For now, we will mostly use 5V DC in our experiments.
Now, which pin is positive and which pin is negative or ground? At the bottom of the table on page 6 we learn that Vdd is positive and Vss is ground. I don’t know any good memory tricks to help you remember this one. If you have a memory trick, let us know in the comment section.
If you are interested in the history and further understand of Vdd and Vss you should check out this entry in Wikipedia.
Tags: data sheet, SX Micro
July 14th, 2008 at 9:27 pm
O.k. - Here is my system - kinda dumb, but it helps me keep them straight
Vdd - Voltage regulate”d” (whatever the standard is, 5v or 3.3v, etc)
Vin - Voltage “in” from batrery or power supply
Vss - Voltage “short” to ground - I know that this is not accurate technically, but it was all I could think of back when I came up with the memory device. ss is pretty
July 15th, 2008 at 7:45 am