This is possible with the device (quotes below from Data Sheet attached) but this wouldn't apply to new, blank chips...
The hardware sector protection feature disables both
program and erase operations in any sector. The hardware
sector unprotection feature re-enables both
program and erase operations in previously protected
Sector protection/unprotection must be implemented
using programming equipment. The procedure requires
a high voltage (VID) on address pin A9 and the
control pins. Details on this method are provided in a
supplement, publication number 22337. Contact an
AMD representative to obtain a copy of the appropriate
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash™ Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is protected
or unprotected. See “Autoselect Mode” for details.
Hardware Data Protection
The command sequence requirement of unlock cycles
for programming or erasing provides data protection
against inadvertent writes (refer to the Command Definitions
table). In addition, the following hardware data
protection measures prevent accidental erasure or programming,
which might otherwise be caused by
spurious system level signals during VCC power-up and
power-down transitions, or from system noise.