![]() But only one or several specialties are implemented in general memory. The most perfect memory should be a high-speed, non-volatile, low-cost and high-density memory. Some instances are also provided in this chapter. Besides, we discuss the protection mechanisms and security operations for AW60/XS128/MCF52233 Flash memory. The programming method of the other MCUs in the whole Freescale S08/S12/ColdFire MCU family is similar. Take AW60/XS128/MCF52233 in Freescale 8/16/32bits S08/S12/ColdFire serials’ MCUs for example, we elaborate the In-Circuit Programming method of Flash memory in this chapter. In-Circuit Programmer Mode means erasing/programming some region of Flash by MCU’s internal programs during run time, with the purpose of saving relevant data and preventing from lost after power off. ![]() Programmer Mode means erasing/programming Flash by programming tool (programmer), with the purpose of writing programs into MCU The programming methods of Flash memory include Programmer Mode and In-Circuit Programmer Mode. The features of Flash memory include electrically erasable, no back-up power to protect data, in-circuit programming, high-density memory, low-cost and so on, which rapidly increase the using of Flash memory in embedded system.
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