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MC68HC908JB8 Datasheet, PDF (171/286 Pages) Motorola, Inc – MICROCONTROLLERS | |||
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Monitor ROM (MON)
Functional Description
10.4.5 Break Signal
A start bit followed by nine low bits is a break signal. (See Figure 10-6.)
When the monitor receives a break signal, it drives the PTA0 pin high for
the duration of two bits before echoing the break signal.
MISSING STOP BIT
TWO-STOP-BIT DELAY BEFORE ZERO ECHO
01234567
01234567
Figure 10-6. Break Transaction
10.4.6 Commands
The monitor ROM uses the following commands:
⢠READ (read memory)
⢠WRITE (write memory)
⢠IREAD (indexed read)
⢠IWRITE (indexed write)
⢠READSP (read stack pointer)
⢠RUN (run user program)
MC68HC908JB8â¢MC68HC08JB8â¢MC68HC08JT8 â Rev. 2.3
Freescale Semiconductor
Monitor ROM (MON)
Technical Data
171
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