Datasheet

Chapter 2 256 Kbyte Flash Module (S12FTS256K2V1)
MC9S12E256 Data Sheet, Rev. 1.10
82 Freescale Semiconductor
2.1.2 Features
• 256 Kbytes of Flash memory comprised of two 128 Kbyte blocks with each block divided into
128 sectors of 1024 bytes
• Automated program and erase algorithm
• Interrupts on Flash command completion, command buffer empty
• Fast sector erase and word program operation
• 2-stage command pipeline for faster multi-word program times
• Sector erase abort feature for critical interrupt response
• Flexible protection scheme to prevent accidental program or erase
• Single power supply for all Flash operations including program and erase
• Security feature to prevent unauthorized access to the Flash memory
• Code integrity check using built-in data compression
2.1.3 Modes of Operation
Program, erase, erase verify, and data compress operations (please refer to Section 2.4.1 for details).
2.1.4 Block Diagram
A block diagram of the Flash module is shown in Figure 2-1.