Freescale Semiconductor MPC5604B - Page 100

MPC5604B/C Microcontroller Reference Manual, Rev. 8
Freescale Semiconductor 89
In order to unsecure the device, the password needs to be written as follows: first the upper word to the
SSCM_PWCMPH register, then the lower word to the SSCM_PWCMPL register. The SSCM compares
the 64-bit password entered into the SSCM_PWCMPH / SSCM_PWCMPL registers with the
NVPWM[1,0] private password stored in the shadow flash. If the passwords match then the SSCM
temporarily uncensors the microcontroller.