MC908JB12DWE Datasheet, PDF (131/332 Pages) Freescale Semiconductor, Inc – MC68HC908JB16 Technical Data

Monitor ROM (MON)
FROM
HOST
WRITE
WRITE
ADDRESS ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
LOW
DATA
DATA
3
1
3
1
3
1
3
1
2, 3
ECHO
Notes:
1 = Echo delay, 2 bit times
2 = Cancel command delay, 11 bit times
3 = Wait 1 bit time before sending next byte.
Figure 9-6. Write Transaction
A brief description of each monitor mode command is given in
Table 9-4 through Table 9-9.
Table 9-4. 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
HIGH
HIGH
LOW
ADDRESS
LOW
DATA
RETURN
MC68HC908JB16 — Rev. 1.1
Freescale Semiconductor
Monitor ROM (MON)
Technical Data
131