mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 57

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

3.8 Address Space Maps
MC68HC16Y3/916Y3
USER’S MANUAL
Figures 3-8 and 3-9 show CPU16 address space for the MC68HC16Y3 MCU.
Figures 3-10 and 3-11 show CPU16 address space for the MC68HC916Y3 MCU.
Address space can be split into physically distinct program and data spaces by
decoding the MCU function code outputs. Figures 3-8 and 3-10 show the memory
map of a system that has combined program and data spaces. Figures 3-9 and 3-11
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 memory, but exception vectors are limited to 16-bit addresses. To access
locations outside of bank 0 during exception handler routines (including interrupt ex-
ceptions), a jump table must be used. Refer to SECTION 4 CENTRAL PROCESSOR
UNIT for more information concerning extended addressing and exception process-
ing. Refer to SECTION 5 SINGLE-CHIP INTEGRATION MODULE 2 for more informa-
tion concerning function codes, address space types, resets, and interrupts.
Freescale Semiconductor, Inc.
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MOTOROLA
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