MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 128

• Manufacturer Part Number: MC68HC908JG16FA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Monitor ROM (MON)
9.4.5 Commands
Technical Data
128
NOTE:
The monitor ROM uses the following commands:
The monitor ROM firmware echoes each received byte back to the PTA0
pin for error checking. An 11-bit delay at the end of each command
allows the host to send a break character to cancel the command. A
delay of two bit times occurs before each echo and before READ,
IREAD, or READSP data is returned. The data returned by a read
command appears after the echo of the last byte of the command.
Wait one bit time after each echo before sending the next byte.
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Freescale Semiconductor, Inc.
ECHO
Notes:
4
1 = Echo delay, 2 bit times
2 = Data return delay, 2 bit times
3 = Cancel command delay, 11 bit times
4 = Wait 1 bit time before sending next byte.
For More Information On This Product,
FROM
HOST
READ
READ (read memory)
WRITE (write memory)
IREAD (indexed read)
IWRITE (indexed write)
READSP (read stack pointer)
RUN (run user program)
1
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READ
Monitor ROM (MON)
4
ADDRESS
Figure 9-5. Read Transaction
HIGH
1
ADDRESS
HIGH
4
ADDRESS
LOW
1
ADDRESS
LOW
MC68HC908JG16
3, 2
DATA
MOTOROLA
—
RETURN
4
Rev. 1.0