MC9S12XF512_1 Datasheet, PDF (224/1306 Pages) Freescale Semiconductor, Inc – S12X Microcontrollers

Chapter 8 256 KByte Flash Module (S12XFTM256K2XFV1)
8.1.2.3 Emulated EEPROM Features
• Up to 2Kbytes of emulated EEPROM (EEE) accessible as 2 Kbytes of RAM
• Flexible protection scheme to prevent accidental program or erase of data
• Automatic EEE file handling using an internal Memory Controller
• Automatic transfer of valid EEE data from D-Flash memory to buffer RAM on reset
• Ability to monitor the number of outstanding EEE related buffer RAM words left to be
programmed into D-Flash memory
• Ability to disable EEE operation and allow priority access to the D-Flash memory
• Ability to cancel all pending EEE operations and allow priority access to the D-Flash memory
8.1.2.4 User Buffer RAM Features
• Up to 2 Kbytes of RAM for user access
8.1.2.5 Other Flash Module Features
• No external high-voltage power supply required for Flash memory program and erase operations
• Interrupt generation on Flash command completion and Flash error detection
• Security mechanism to prevent unauthorized access to the Flash memory
8.1.3 Block Diagram
The block diagram of the Flash module is shown in Figure 8-1.
MC9S12XF - Family Reference Manual, Rev.1.19
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Freescale Semiconductor