S912XEG128J2VAL
Model | S912XEG128J2VAL |
Description | IC,MICROCONTROLLER,16-BIT,CPU12 CPU,CMOS,QFP,112PIN,PLASTIC |
PDF file | Total 1327 pages (File size: 7M) |
Chip Manufacturer | ROCHESTER |
Chapter 4 Memory Protection Unit (S12XMPUV1)
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4.1.4
Modes of Operation
The MPU module can be used in all MCU modes.
4.2
External Signal Description
The MPU module has no external signals.
4.3
Memory Map and Register Definition
This section provides a detailed description of address space and registers used by the MPU module.
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
229
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: S12XE products in 208 MAPBGA packages
Each descriptor can be configured to allow one of four types of access privilege for the defined
memory region
— Bus master has full access (read, write and execute enabled)
— Bus master can read and execute (write illegal)
— Bus master can read and write (execution illegal)
— Bus master can only read (write and execution illegal)
Accesses to memory not covered by any protection descriptor will cause an access violation