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The term COD (Country of Diffusion) refers to the country where the semiconductor wafer was fabricated ("diffused") and is a key piece of traceability and customs information.
For the STM32F765IGT6 microcontroller, the specific COD is not encoded in the standard part number itself . The part number tells you the product line, core, features, package, and temperature grade, but not the fab location.
To find the COD for your specific chip, you need to look at the marking on the device itself or its packaging. Here’s how to interpret it:
1. Check the Top Marking on the Chip
The line below the main part number (STM32F765IGT6) contains the traceability information. It typically follows this pattern:
XXXXXXXX YWWZZZThe critical letter is
Y(the Assembly Base code). For STMicroelectronics, common codes include:M: Malaysia (the most common for STM32)C: ChinaK: KoreaP: PhilippinesT: TaiwanV: SingaporeA: Thailand (or other, less common sites)Example: A marking ending with
M234means the chip was assembled/tested in Malaysia in week 23 of a given year.2. Check the Packaging Label
The outer box, tape, or reel will have a label that often states the COD explicitly in text, for example:
COO: MALAYSIACountry of Origin: CHINAASSEMBLED IN MALAYSIAThis is the most straightforward and legally binding declaration for customs.
3. Datasheet and Official Documents
While the datasheet doesn't give the COD for a specific unit, it confirms the possible assembly sites. ST's official Product Qualification or Packaging Information documents list the qualified manufacturing and assembly sites for a product family.
Summary for STM32F765IGT6:
STM32F765IGT6(ARM Cortex-M7, 2MB Flash, LQFP176 package).If you have the physical chip or its original packaging, that is the only way to provide the exact COD. If you are creating a Bill of Materials (BOM) or doing pre-purchase research, it is standard to list the primary source (e.g., "Malaysia") with the note that it is subject to change based on ST's manufacturing allocation.