MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
13-8 Freescale Semiconductor
13.3.2 Register Descriptions
The flash registers are detailed in the following sections.
13.3.2.1 Module Configuration Register (FLASH_MCR)
A number of module configuration register (FLASH_MCR) bits are protected from a write while another
bit or set of bits are in a specific state. These locks are discussed in relationship to each bit in this section.
Simultaneously writing bits which lock each other out is discussed in Section 13.3.2.1.1, “MCR
Simultaneous Register Writes.” The MCR is always available to be read except when the flash module is
disabled.
Register Base+0x0020 FLASH_BIUAPR Flash bus interface unit access protection register 32
Register Base+0x0030
to Register
Base+0x7FFF
— Reserved —
012 3456789101112131415
R0 0 0 0 SIZE 0 LAS
0
00MAS
W
MPC5554
Reset
000 0011101100000
MPC5553
Reset
000 0010101100000
Reg Addr Base (0xC3F8_8000) + 0x0000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R EER RWE 1 1 PEAS DONE PEG 0 0 STOP 0 PGM PSUS ERS ESUS EHV
W w1c w1c
MPC5554
Reset
001 1011000000000
MPC5553
Reset
001 1011000000000
Reg Addr Base (0xC3F8_8000) + 0x0000
Figure 13-4. Module Configuration Register (FLASH_MCR)
Table 13-6. FLASH_MCR Field Descriptions
Bits Name Description
0–3 — Reserved.
Table 13-5. Module Register Memory Map (Continued)
Byte Address Register Name Register Description Size (bits)
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