Datasheet

TMS320F2809, TMS320F2808, TMS320F2806

TMS320F2802, TMS320F2801, TMS320C2802

TMS320C2801, TMS320F28016, TMS320F28015

SPRS230N –OCTOBER 2003–REVISED MAY 2012

www.ti.com

3.2.10 Security

The 280x devices support high levels of security to protect the user firmware from being reverse

engineered. The security features a 128-bit password (hardcoded for 16 wait-states), which the user

programs into the flash. One code security module (CSM) is used to protect the flash/OTP and the L0/L1

SARAM blocks. The security feature prevents unauthorized users from examining the memory contents

via the JTAG port, executing code from external memory or trying to boot-load some undesirable software

that would export the secure memory contents. To enable access to the secure blocks, the user must

write the correct 128-bit KEY value, which matches the value stored in the password locations within the

Flash.

NOTE

The 128-bit password (at 0x3F 7FF8 – 0x3F 7FFF) must not be programmed to zeros. Doing

so would permanently lock the device.

disclaimer

Code Security Module Disclaimer

THE CODE SECURITY MODULE (CSM) INCLUDED ON THIS DEVICE WAS DESIGNED

TO PASSWORD PROTECT THE DATA STORED IN THE ASSOCIATED MEMORY

(EITHER ROM OR FLASH) AND IS WARRANTED BY TEXAS INSTRUMENTS (TI), IN

ACCORDANCE WITH ITS STANDARD TERMS AND CONDITIONS, TO CONFORM TO

TI'S PUBLISHED SPECIFICATIONS FOR THE WARRANTY PERIOD APPLICABLE FOR

THIS DEVICE.

TI DOES NOT, HOWEVER, WARRANT OR REPRESENT THAT THE CSM CANNOT BE

COMPROMISED OR BREACHED OR THAT THE DATA STORED IN THE ASSOCIATED

MEMORY CANNOT BE ACCESSED THROUGH OTHER MEANS. MOREOVER, EXCEPT

AS SET FORTH ABOVE, TI MAKES NO WARRANTIES OR REPRESENTATIONS

CONCERNING THE CSM OR OPERATION OF THIS DEVICE, INCLUDING ANY IMPLIED

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

IN NO EVENT SHALL TI BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL, INDIRECT,

INCIDENTAL, OR PUNITIVE DAMAGES, HOWEVER CAUSED, ARISING IN ANY WAY

OUT OF YOUR USE OF THE CSM OR THIS DEVICE, WHETHER OR NOT TI HAS BEEN

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE,

BUT ARE NOT LIMITED TO LOSS OF DATA, LOSS OF GOODWILL, LOSS OF USE OR

INTERRUPTION OF BUSINESS OR OTHER ECONOMIC LOSS.

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Product Folder Link(s): TMS320F2809 TMS320F2808 TMS320F2806 TMS320F2802 TMS320F2801 TMS320C2802

TMS320C2801 TMS320F28016 TMS320F28015