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M68HC08 Datasheet(PDF) 121 Page - Freescale Semiconductor, Inc

Part # M68HC08
Description  Microcontrollers
PDF  288 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 121 Page - Freescale Semiconductor, Inc

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Monitor ROM (MON)
MC68HC908BD48 — Rev. 2.1
Data Sheet
Freescale Semiconductor
Monitor ROM (MON)
121
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
READ
READ
ECHO
SENT TO
MONITOR
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
DATA
RETURN
ADDRESS
LOW



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