mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 170

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Monitor ROM (MON)
13.4.3 Echoing
13.4.4 Break Signal
Technical Data
168
SENT TO
MONITOR
ECHO
0
READ
1
2
As shown in
received byte back to the PTA0 pin for error checking.
Any result of a command appears after the echo of the last byte of the
command.
A start bit followed by nine low bits is a break signal. (See
When the monitor receives a break signal, it drives the PTA0 pin high for
the duration of two bits before echoing the break signal.
3
MISSING STOP BIT
READ
4
Figure 13-5. Break Transaction
Figure 13-4. Read Transaction
5
Figure
6
ADDR. HIGH
Monitor ROM (MON)
7
13-4, the monitor ROM immediately echoes each
ADDR. HIGH
TWO-STOP-BIT DELAY BEFORE ZERO ECHO
0
ADDR. LOW
1
2
3
ADDR. LOW
4
Freescale Semiconductor
5
6
RESULT
MC68HC08QA24
DATA
Figure
7
13-5.)