MC68HC08AZ60A Datasheet, PDF (183/480 Pages) Motorola, Inc – Microcontrollers

Monitor ROM (MON)
Functional description
12.4.4.1 Commands
The monitor ROM uses the following commands:
• READ (read memory)
• WRITE (write memory)
• IREAD (indexed read)
• IWRITE (indexed write)
• READSP (read stack pointer)
• RUN (run user program)
Table 12-3. READ (Read Memory) Command
Description
Read byte from memory
Operand
Specifies 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 ADDR. HIGH ADDR. HIGH ADDR. LOW ADDR. LOW
DATA
ECHO
RESULT
Table 12-4. WRITE (Write Memory) Command
Description
Operand
Write byte to memory
Specifies 2-byte address in high byte:low byte order; low byte followed by data byte
Data returned
Opcode
None
$49
Command sequence
SENT TO
MONITOR
WRITE
WRITE ADDR. HIGH ADDR. HIGH ADDR. LOW ADDR. LOW
DATA
DATA
ECHO
MC68HC08AZ60A — Rev 0.0
MOTOROLA
Monitor ROM (MON)
Advance Information
183