MC68HC908KX8 Datasheet, PDF (263/310 Pages) Motorola, Inc – Microcontrollers

Monitor ROM (MON)
Commands
A brief description of each monitor mode command is given here.
Table 18-4. READ (Read Memory) Command
Description Read byte from memory
Operand 2-byte address in high byte:low byte order
Data
returned
Returns contents of specified address
Opcode $4A
Command Sequence
SENT TO
MONITOR
READ
READ
ADDRESS ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
LOW
ECHO
DATA
RETURN
Table 18-5. WRITE (Write Memory) Command
Description Write byte to memory
Operand
2-byte address in high byte:low byte order; low byte followed by
data byte
Data
returned
None
Opcode $49
Command Sequence
FROM
HOST
WRITE
WRITE
ADDRESS ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
LOW
DATA
DATA
ECHO
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
MOTOROLA
Monitor ROM (MON)
Technical Data
263