mc68hc908gr8b Freescale Semiconductor, Inc, mc68hc908gr8b Datasheet - Page 225
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mc68hc908gr8b
Manufacturer Part Number
mc68hc908gr8b
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GR8B.pdf
(260 pages)
- Current page: 225 of 260
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A brief description of each monitor mode command is given in
Freescale Semiconductor
Data Returned
3
FROM HOST
SENT TO MONITOR
ECHO
Notes:
Description
ECHO
Notes:
4
ECHO
WRITE
1 = Echo delay, approximately 2 bit times
2 = Cancel command delay, 11 bit times
3 = Wait 1 bit time before sending next byte.
FROM HOST
1 = Echo delay, approximately 2 bit times
2 = Data return delay, approximately 2 bit times
3 = Cancel command delay, 11 bit times
4 = Wait 1 bit time before sending next byte.
Operand
Opcode
READ
READ
1
1
WRITE
READ
READ
Table 18-3. READ (Read Memory) Command
Read byte from memory
2-byte address in high-byte:low-byte order
Returns contents of specified address
$4A
3
ADDRESS
4
HIGH
ADDRESS
ADDRESS
Figure 18-14. Read Transaction
Figure 18-15. Write Transaction
MC68HC908GR8B Data Sheet, Rev. 3.0
HIGH
HIGH
1
ADDRESS
1
HIGH
ADDRESS
ADDRESS
Command Sequence
HIGH
HIGH
3
ADDRESS
4
LOW
ADDRESS
ADDRESS
LOW
LOW
1
ADDRESS
1
LOW
ADDRESS
ADDRESS
LOW
LOW
Table 18-3
3
DATA
3, 2
1
through
DATA
DATA
DATA
Table
RETURN
4
RETURN
2, 3
Monitor Module (MON)
18-8.
225
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