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determining_pinout [2012/03/02 07:13] – created mcmaster | determining_pinout [2012/03/02 07:23] – mcmaster | ||
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+ | ====== Numbering ====== | ||
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+ | Most standard numbering seems to be upper left is pin 1 and go counter-clockwise. | ||
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====== Photograph in package ====== | ====== Photograph in package ====== | ||
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{{gallery>: | {{gallery>: | ||
- | Notice that the right side is larger. This means that the right side is PMOS and the left side is NMOS. Since NMOS likes to connect to ground and PMOS likes to connect to V+ the right side is V+ and the left side is V-. | + | Notice that the right side is larger? This means that the right side is PMOS and the left side is NMOS. Since NMOS on the right likes to connect to ground |
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+ | If the cells are matched size or its a specialized chip you might not have this luxury. | ||
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+ | {{gallery>: | ||
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+ | ====== Functional grouping ====== | ||
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+ | More often than not you can figure out a lot of pins based on their clustering and general layout. | ||