XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 154

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

Monitor ROM (MON)
10.4.2 Data Format
10.4.3 Echoing
Advance Information
154
Communication with the monitor ROM is in standard non-return-to-zero
(NRZ) mark/space data format. (See
The data transmit and receive rate can be anywhere from 4800 baud to
28.8 kbaud. Transmit and receive baud rates must be identical.
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.
BREAK
SENT TO
MONITOR
$A5
ECHO
START
BIT
START
START
BIT
BIT
BIT 0
READ
Figure 10-4
BIT 0
BIT 0
Figure 10-3. Sample Monitor Waveforms
Monitor ROM (MON)
BIT 1
Figure 10-2. Monitor Data Format
BIT 1
BIT 1
Figure 10-4. Read Transaction
READ
BIT 2
BIT 2
BIT 2
, the monitor ROM immediately echoes each
BIT 3
ADDR. HIGH
BIT 3
BIT 3
BIT 4
BIT 4
BIT 4
ADDR. HIGH ADDR. LOW
Figure 10-2
BIT 5
BIT 5
BIT 5
BIT 6
MC68HC(7)08KH12
BIT 6
BIT 6
BIT 7
and
BIT 7
BIT 7
ADDR. LOW
STOP
Figure 10-3
BIT
STOP
STOP
BIT
BIT
START
NEXT
BIT
MOTOROLA
START
START
NEXT
NEXT
BIT
BIT
—
RESULT
DATA
Rev. 1.0
.)