Flash MemoryMPC5606S Microcontroller Reference Manual, Rev. 7Freescale Semiconductor 60711 TSLK: Test/Shadow address space block LocK (Read/Write)This bit is used to lock the block of Test and Shadow Address Space from Program and Erase (Erase isany case forbidden for Test block).A value of 1 in the TSLK register signifies that the Test/Shadow block is locked for Program and Erase.A value of 0 in the TSLK register signifies that the Test/Shadow block is available to receive Program andErase pulses.The TSLK register is not writable once an interlock write is completed until MCR.DONE is set at thecompletion of the requested operation. Likewise, the TSLK register is not writable if a high voltageoperation is suspended.Upon reset, information from the Test flash block is loaded into the TSLK register. The TSLK bit may bewritten as a register. Reset will cause the bit to go back to its Test flash block value. The default value ofthe TSLK bit (assuming erased fuses) would be locked.TSLK is not writable unless LME is high.0: Test/Shadow Address Space Block is unlocked and can be modified (if also SLL.STSLK=0).1: Test/Shadow Address Space Block is locked and cannot be modified.12:13 Reserved (Read Only). Write these bits has no effect and read these bits always outputs 0.14:15 MLK1-0: Mid address space block LocK 1-0 (Read/Write)These bits are used to lock the blocks of Mid Address Space from Program and Erase.All the MLK1-0 are not used for this memory cut that is all mapped in low address space.A value of 1 in a bit of the MLK register signifies that the corresponding block is locked for Program andErase.A value of 0 in a bit of the MLK register signifies that the corresponding block is available to receiveProgram and Erase pulses.The MLK register is not writable once an interlock write is completed until MCR.DONE is set at thecompletion of the requested operation. Likewise, the MLK register is not writable if a high voltage operationis suspended.Upon reset, information from the Test flash block is loaded into the MLK registers. The MLK bits may bewritten as a register. Reset will cause the bits to go back to their Test flash block value. The default valueof the MLK bits (assuming erased fuses) would be locked.In the event that blocks are not present (due to configuration or total memory size), the MLK bits will defaultto locked, and will not be writable. The reset value will always be 1 (independent of the Test flash block),and register writes will have no effect.In the 80 KB flash macrocell bits MLK1-0 are read-only and locked at 1.MLK is not writable unless LME is high.0: Mid Address Space Block is unlocked and can be modified (if also SLL.SMLK=0).1: Mid Address Space Block is locked and cannot be modified.Table 17-44. NVLML field descriptions (continued)Field Description
