Freescale Semiconductor MC68HC908MR16 manual Read Read Memory Command, Write Write Memory Command

Monitor ROM (MON)

		Table 18-3. 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
SENT TO MONITOR
				ADDRESS		ADDRESS
	READ	READ	ADDRESS		ADDRESS		DATA
			HIGH	HIGH	LOW	LOW

ECHO

RETURN

Table 18-4. 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
FROM HOST
WRITE	WRITE	ADDRESS	ADDRESS	ADDRESS	ADDRESS	DATA	DATA
		HIGH	HIGH	LOW	LOW
ECHO

Table 18-5. IREAD (Indexed Read) Command

Description	Read next 2 bytes in memory from last address accessed
Operand	2-byte address in high byte:low byte order
Data Returned	Returns contents of next two addresses
Opcode	$1A
				Command Sequence
		FROM HOST
			IREAD	IREAD	DATA	DATA

ECHO

RETURN

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

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