MC68HC705V12CFN MOTOROLA [Motorola, Inc], MC68HC705V12CFN Datasheet - Page 47
MC68HC705V12CFN
Manufacturer Part Number
MC68HC705V12CFN
Description
The Motorola microcontroller
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC705V12CFN.pdf
(248 pages)
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2.4 RAM
2.5 Boot ROM
2.6 EPROM
2.7 EEPROM
MC68HC705V12
MOTOROLA
NOTE:
—
Rev. 3.0
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.
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.
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.
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
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
Section 12. EPROM and EEPROM
Memory Map
for programming details.
for programming details.
Advance Information
Memory Map
RAM
47
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