MC908MR16CFUE Datasheet, PDF (261/282 Pages) Freescale Semiconductor, Inc – On-chip programming firmware for use with host personal computer, Clock generator module (CGM)

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
Monitor ROM (MON)
READ
READ
ADDRESS ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
LOW
ECHO
DATA
RETURN
Table 18-4. WRITE (Write Memory) Command
Description
Operand
Data Returned
Opcode
FROM HOST
Write byte to memory
2-byte address in high-byte:low-byte order; low byte followed by data byte
None
$49
Command Sequence
WRITE
WRITE
ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
ADDRESS
LOW
DATA
ECHO
DATA
Table 18-5. IREAD (Indexed Read) Command
Description
Operand
Data Returned
Opcode
Read next 2 bytes in memory from last address accessed
2-byte address in high byte:low byte order
Returns contents of next two addresses
$1A
Command Sequence
FROM HOST
IREAD
IREAD
DATA
DATA
ECHO
RETURN
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Freescale Semiconductor
261