You are here

Unique Die Serial Number | Cypress Semiconductor

Unique Die Serial Number

Summary: 2 Replies, Latest post by psoc-ed on 15 Mar 2013 09:10 PM PDT
Verified Answers: 0
Last post
Log in to post new comments.
user_14586677's picture
7646 posts

There is a recurring problem in customer base, need for a unique silicon die

ID for each chip. This is not a Device ID, as currently implemented. Something

akin to this


Would it be possible to implement thru programmer ? All PSOC Families ? Auto generated, say off a tax number, GPS

coordinates, or IP group number, something unique to the customer. Even a Cypress seed for those who are consultants,

the generated serial # stored in FLASH or EEPROM, and then protected as read only during programming.


Regards, Dana.

PSoC Rocks's picture
141 posts

Following registers would provide a unique ID for every PSoC 3 device (Refer to PSoC 3 Registers TRM):

FLSHID_CUST_TABLES_Y_LOC (0xC0100) - Y coordinate in Wafer

FLSHID_CUST_TABLES_X_LOC  (0xC0101) - X coordinate in Wafer




FLSHID_CUST_TABLES_WRK_WK: 0xC0105 - Work Week of Manufacturing

FLSHID_CUST_TABLES_FAB_YR: 0xC0106 - Fab ID & Year of Manufacturing.


But the only drawback of this is that "Year of Manufacturing" parameter is only from 0 to 9. So a chip manufactured on 2013 and 2023 will have the same year number.

user_274749305's picture
76 posts

why not come at it from another direction?


there are several manufacturers of memory products that include an inexpensive MAC address chip in the product line. This will give you an 48 bit globally unique ID. I don't want to mention names/products since that may be against forum rules.


some come as small as TO-92 and SOT-223 with differing interfaces from 1-Wire, SCIO, I2C, SPI.


pricing, in modest quantities, can be as low as 30 cents US.


google "MAC address memory chip" if you want more info.


i've used several in past products that did not have an ethernet controller. with some ethernet controller capable MCUs they come along in the product so i haven't used them in several years.




Log in to post new comments.