MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
1-8 Freescale Semiconductor
— Configurable error-correcting codes (ECC) reporting for internal SRAM and flash memories
• On-chip flash
— 2 Mbytes (MPC5554) or 1.5 Mbytes (MPC5553) burst flash memory
— 256K 64-bit (MPC5554) or 196K 64-bit (MPC5553) configuration
— Censorship protection scheme to prevent flash content visibility
— Hardware read-while-write feature that allows blocks to be erased/programmed while other
blocks are being read (used for EEPROM emulation and data calibration)
— 20 blocks (MPC5554) or 16 blocks (MPC5553) with sizes ranging from 16 Kbytes to
128 Kbytes to support features such as boot block, operating system block, and EEPROM
emulation
— Read while write with multiple partitions
— Page programming mode to support rapid end of line programming
— Hardware programming state machine
• Configurable cache memory, 32 kilobyte (MPC5554) / 8 kilobyte (MPC5553)
— 8-way set-associative, unified (instruction and data) cache in the MPC5554
— 2-way set-associative unified (instruction and data) cache in the MPC5553
• On-chip internal static RAM (SRAM)
— 64 kilobyte general-purpose RAM of which 32 kilobytes can be configured for standby
operation
— ECC performs single bit correction, double bit error detection
• Boot assist module (BAM)
— Enables and manages the transition of MCU from reset to user code execution in the following
configurations:
– User application can boot from internal or external flash memory
– Download and execution of code via FlexCAN or eSCI
• Enhanced modular I/O system (eMIOS)
— 24 orthogonal channels with double action, PWM, and modulus counter functionality
— Supports all DASM and PWM modes of MIOS14 (MPC5xx)
— Four selectable time bases plus shared time or angle counter bus
— DMA and interrupt request support
— Motor control capability
• Enhanced time processor unit (eTPU)
— MPC5554 has two eTPU engines, MPC5553 has one engine
— Each eTPU engine is an event-triggered timer subsystem
— High level assembler/compiler
— 32 channels per engine
— 24-bit timer resolution
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