Freescale Semiconductor, Inc.
Monitor Read-Only Memory (MON)
Functional Description
Table 10-4. WRITE (Write Memory) Command
Description
Operand
Write byte to memory
Specifies 2-byte address in high byte:low byte order; low byte followed by data byte
Data Returned
Opcode
None
$49
Command Sequence
SENT TO
MONITOR
WRITE
1
WRITE
ADDR. HIGH
ADDR. HIGH
ADDR. LOW
ADDR. LOW
DATA
DATA
2
1
2
1
2
1
ECHO
Notes: 1 = Echo delay (2 bit times)
2 = Wait 1 bit time before sending next byte.
Table 10-5. IREAD (Indexed Read) Command
Description
Operand
Read next 2 bytes in memory from last address accessed
Specifies 2-byte address in high byte:low byte order
Returns contents of next two addresses
$1A
Data Returned
Opcode
Command Sequence
SENT TO
MONITOR
IREAD
IREAD
DATA
DATA
1
2
2
RESULT
ECHO
Notes: 1 = Echo delay (2 bit times)
2 = Data return delay (2 bit times)
MC68HC908RFRK2
MOTOROLA
AdvanceInformation
157
Monitor Read-Only Memory (MON)
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