MC68HC08BD24 Datasheet, PDF (111/244 Pages) Motorola, Inc – HCMOS Microcontroller Unit

9.4.5 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 9-3. 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
ECHO
READ
ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
ADDRESS
LOW
DATA
RETURN
MC68HC08BD24 — Rev. 1.1
Freescale Semiconductor
Technical Data
111