Datasheet

MC68HC908LJ12 — Rev. 2.1 Technical Data
Freescale Semiconductor Memory Map 43
Technical Data — MC68HC908LJ12
Section 2. Memory Map
2.1 Contents
2.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
2.3 Unimplemented Memory Locations . . . . . . . . . . . . . . . . . . . . .43
2.4 Reserved Memory Locations . . . . . . . . . . . . . . . . . . . . . . . . . .44
2.5 Input/Output (I/O) Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
2.2 Introduction
The CPU08 can address 64k-bytes of memory space. The memory
map, shown in Figure 2-1, includes:
• 12,288 bytes of user FLASH memory
• 512 bytes of random-access memory (RAM)
• 48 bytes of user-defined vectors
• 960 bytes of monitor ROM
2.3 Unimplemented Memory Locations
Accessing an unimplemented location can cause an illegal address
reset if illegal address resets are enabled. In the memory map
(Figure 2-1) and in register figures in this document, unimplemented
locations are shaded.