Datasheet

Monitor ROM (MON)
MC68HC908AP Family Data Sheet, Rev. 4
122 Freescale Semiconductor
Table 8-4. 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
Table 8-5. 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
READ
READ
ECHO
SENT TO
MONITOR
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
DATA
RETURN
ADDRESS
LOW
WRITE
WRITE
ECHO
FROM
HOST
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
ADDRESS
LOW
DATA
DATA