參數(shù)資料
型號: MC68HC08KH12A
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 106/178頁
文件大?。?/td> 925K
代理商: MC68HC08KH12A
Monitor ROM (MON)
MC68HC08KH12A Data Sheet, Rev. 1.1
106
Freescale Semiconductor
Table 10-2
is a summary of the differences between user mode and monitor mode.
10.3.2 Data Format
Communication with the monitor ROM is in standard non-return-to-zero (NRZ) mark/space data format.
(See
Figure 10-2
and
Figure 10-3
.)
Figure 10-2. Monitor Data Format
Figure 10-3. Sample Monitor Waveforms
The data transmit and receive rate can be anywhere from 4800 baud to 28.8 kbaud. Transmit and receive
baud rates must be identical.
10.3.3 Echoing
As shown in
Figure 10-4
, the monitor ROM immediately echoes each received byte back to the PTA0 pin
for error checking.
Figure 10-4. Read Transaction
Any result of a command appears after the echo of the last byte of the command.
Table 10-2. Mode Differences
Modes
Functions
Break
Vector High
COP
Reset
Vector High
Reset
Vector Low
Break
Vector Low
SWI
Vector High
SWI
Vector Low
User
Enabled
$FFFE
$FFFF
$FFFC
$FFFD
$FFFC
$FFFD
Monitor
Disabled
(1)
1. If the high voltage (V
+ V
) is removed from the IRQ1/V
PP
pin or the RST pin, the SIM asserts its COP enable output.
The COP is a mask option enabled or disabled by the COPD bit in the configuration register.
$FEFE
$FEFF
$FEFC
$FEFD
$FEFC
$FEFD
BIT 5
START
BIT
BIT 0
BIT 1
NEXT
START
BIT
STOP
BIT
BIT 2
BIT 3
BIT 4
BIT 6
BIT 7
BIT 5
START
BIT
BIT 0
BIT 1
NEXT
START
BIT
STOP
BIT
STOP
BIT
BIT 2
BIT 3
BIT 4
BIT 6
BIT 7
START
BIT
BIT 0
BIT 1
NEXT
START
BIT
BIT 2
$A5
BREAK
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
ADDR. HIGH
READ
READ
ADDR. HIGH ADDR. LOW
ADDR. LOW
DATA
ECHO
SENT TO
MONITOR
RESULT
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