MC68HC908GP20 Datasheet, PDF (215/406 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

A brief description of each monitor mode command is given in
Table 15-4 through Table 15-9.
Table 15-4. READ (Read Memory) Command
Description
Operand
Data
Returned
Opcode
SENT TO
MONITOR
Read byte from memory
2-byte address in high-byte:low-byte order
Returns contents of specified address
$4A
Command Sequence
READ
ECHO
READ
ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
ADDRESS
LOW
DATA
RETURN
Table 15-5. 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
MC68HC908GP20 — Rev 2.1
Freescale Semiconductor
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