68HC705V12 Datasheet, PDF (47/248 Pages) Motorola, Inc – The Motorola microcontroller

Memory Map
RAM
2.4 RAM
The total RAM consists of 384 bytes (including the stack). The stack
begins at address $00FF and proceeds down to $00C0 (64 bytes). Using
the stack area for data storage or temporary work locations requires care
to prevent it from being overwritten due to stacking from an interrupt or
subroutine call.
NOTE:
The stack is located in the middle of the RAM address space. Data
written to addresses within the stack address range can be overwritten
during stack activity.
2.5 Boot ROM
The boot ROM space in the MC68HC705V12 consists of 1008 bytes
including EPROM bootloader code, EEPROM test code, burn-in code,
and 16 bytes of bootloader vectors. The mask option register (MOR) is
located in this space.
2.6 EPROM
There are 12,032 bytes of user EPROM and 16 bytes of EPROM for user
vectors and the computer operating properly (COP) update location.
Refer to Section 12. EPROM and EEPROM for programming details.
2.7 EEPROM
This device contains 256 bytes of EEPROM. Programming the
EEPROM is performed by the user on a single-byte basis by
manipulating the programming register located at address $001C. Refer
to Section 12. EPROM and EEPROM for programming details.
MC68HC705V12 — Rev. 3.0
MOTOROLA
Memory Map
Advance Information
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