MC68HC908AS60ACFN FREESCALE [Freescale Semiconductor, Inc], MC68HC908AS60ACFN Datasheet - Page 157

• Manufacturer Part Number: MC68HC908AS60ACFN
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

14.3.5 Commands
The monitor ROM uses these commands:
A sequence of IREAD or IWRITE commands can access a block of memory sequentially over the full
64-Kbyte memory map.
Freescale Semiconductor
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Description
Operand
Data Returned
Opcode
Command Sequence
Description
Operand
Data Returned
Opcode
Command Sequence
SENT TO
MONITOR
READ, read memory
WRITE, write memory
IREAD, indexed read
IWRITE, indexed write
READSP, read stack pointer
RUN, run user program
ECHO
SENT TO
MONITOR
ECHO
WRITE
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
READ
Read byte from memory
Specifies 2-byte address in high byte:low byte order
Returns contents of specified address
$4A
Write byte to memory
Specifies 2-byte address in high byte:low byte order; low byte followed by data byte
None
$49
WRITE
Table 14-4. WRITE (Write Memory) Command
Table 14-3. READ (Read Memory) Command
READ
ADDR. HIGH
ADDR. HIGH
ADDR. HIGH
ADDR. HIGH
ADDR. LOW
ADDR. LOW
ADDR. LOW
ADDR. LOW
DATA
Functional Description
RESULT
DATA
DATA
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