MC68HC08GZ32 Datasheet, PDF (288/320 Pages) Freescale Semiconductor, Inc – Microcontrollers

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A brief description of each monitor mode command is given in Table 20-3 through Table 20-8.
Table 20-3. READ (Read Memory) Command
Description
Operand
Data Returned
Opcode
Read byte from memory
2-byte address in high-byte:low-byte order
Returns contents of specified address
$4A
Command Sequence
SENT TO MONITOR
READ
ECHO
READ
ADDRESS ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
LOW
DATA
RETURN
Table 20-4. WRITE (Write Memory) Command
Description
Operand
Data Returned
Opcode
FROM HOST
Write byte to memory
2-byte address in high-byte:low-byte order; low byte followed by data byte
None
$49
Command Sequence
WRITE
WRITE
ADDRESS ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
LOW
DATA
ECHO
DATA
Table 20-5. IREAD (Indexed Read) Command
Description
Operand
Data Returned
Opcode
Read next 2 bytes in memory from last address accessed
2-byte address in high byte:low byte order
Returns contents of next two addresses
$1A
Command Sequence
FROM HOST
IREAD
IREAD
DATA
DATA
ECHO
RETURN
MC68HC08GZ32 Data Sheet, Rev. 3
288
Freescale Semiconductor