Hello,
SPC5777CLMMO3
L = ISO-compliant CAN FD available, trimmed for LDO regulator, and includes SHE-compliant security firmware version 2.08
3 = Operating frequency 2 x 264 MHz
SPC5777CCMMOS
C = ISO-compliant CAN FD available, trimmed for SMPS or external regulator, and includes SHE-compliant security firmware version 2.07
S = There is no such part offered by NXP, see the attached screenshot.
best regards,
Peter