SPMCK16Z4MPV20 datasheet(53/500 Pages) FREESCALE

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M68HC16 Z SERIES

OVERVIEW

USER’S MANUAL

3-19

3.7 Address Space Maps

Figures 3-11 through 3-16 show CPU16 address space for M68HC16 Z-series MCUs.

Address space can be split into physically distinct program and data spaces by decod-

ing the MCU function code outputs.

Figures 3-11, 3-12, and 3-13 show the memory map of a system that has combined

program and data spaces. Figures 3-14, 3-15, and 3-16 show the memory map when

MCU function code outputs are decoded.

Reset and exception vectors are mapped into bank 0 and cannot be relocated. The

CPU16 program counter, stack pointer, and Z index register can be initialized to any

address in pseudolinear memory, but exception vectors are limited to 16-bit address-

es. To access locations outside of bank 0 during exception handler routines (including

interrupt exceptions), a jump table must be used. Refer to SECTION 4 CENTRAL

PROCESSOR UNIT for more information concerning memory management, extend-

ed addressing, and exception processing. Refer to SECTION 5 SYSTEM INTEGRA-

TION MODULE for more information concerning function codes, address space types,

resets, and interrupts.

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SPMCK16Z4MPV20 Datasheet(PDF) 53 Page - Freescale Semiconductor, Inc