Information

28.1.1.3 FlexRAM Features
• Memory that can be used as traditional RAM or as high-endurance EEPROM storage
• Up to 2 Kbytes of FlexRAM configured for EEPROM or traditional RAM operations
• When configured for EEPROM:
• Protection scheme prevents accidental program or erase of data written for
EEPROM
• Built-in hardware emulation scheme to automate EEPROM record maintenance
functions
• Programmable EEPROM data set size and FlexNVM partition code facilitating
EEPROM memory endurance trade-offs
• Supports FlexRAM aligned writes of 1, 2, or 4 bytes at a time
• Read access to FlexRAM possible while programming or erasing data in the
program or data flash memory
• When configured for traditional RAM:
• Read and write access possible to the FlexRAM while programming or erasing
data in the program or data flash memory
28.1.1.4 Other Flash Memory Module Features
• Internal high-voltage supply generator for flash memory program and erase
operations
• Optional interrupt generation upon flash command completion
• Supports MCU security mechanisms which prevent unauthorized access to the flash
memory contents
28.1.2 Block Diagram
The block diagram of the flash memory module is shown in the following figure.
Chapter 28 Flash Memory Module (FTFL)
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 497