Do you already have an account? The top and bottom strategy applies to those flash devices that have a parallel interface. Some Flash ROM to configure the top or bottom is initiated bottom boot sector an external terminal. Flash ROM provides protection to prevent accidental erasure of a separate storage block and write. To illustrate the difference between top and bottom:
performance and lower power consumption. IS29GL Top/Bottom Boot and High/Low Sector Protected. 3V Page Mode Parallel NOR Flash Memory. A Flash ROM is usually divided into many blocks or sectors (such as 64KB blocks ) of each block can be separate erase, in writing, and the. The small sectors are located at the bottom of the memory "bottom-boot" ( standard) or optionally at the top of memory "top-boot" (special order).
I disagree that the protection defined by various combination of the Boot Protect bits is either obvious or relevant in the case of the OPs application. Therefore, the boot block need special treatment, including hard lock protection, most Flash ROM to protect the region's accidental damage. At the moment, the plan is to store voice data i. Jul 30, 1. Embedded Systems and Microcontrollers. A basic filesystem will be used. The boot code and customize the size of the data than the standard block a lot of small, in order to avoid the waste of valuable space, many of the Flash ROM the first or last blocks is divided into smaller sub blocks, such as 8KB.
sector depending on boot configuration (top boot or bottom boot) .. 04 = VCC = V, bottom boot sector device (No CFI Support). R1 = VCC = V. On the Farnell page it mentions something about "sector type" being "bottom boot " or "top boot" could this have something to do with it?. Boot sectored devices also have the option of placing the smaller boot sectors within the first 64 Kbytes of the low address range (called bottom.