MC68HC908BD48 Datasheet, PDF (121/290 Pages) Freescale Semiconductor, Inc – Microcontrollers

Monitor ROM (MON)
Functional Description
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 ADDRESS
HIGH
HIGH
LOW
LOW
DATA
RETURN
MC68HC908BD48 — Rev. 1.0
MOTOROLA
Monitor ROM (MON)
Technical Data
121