參數資料
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: 109/178頁
文件大?。?/td> 925K
代理商: MC68HC08KH12A
Functional Description
MC68HC08KH12A Data Sheet, Rev. 1.1
Freescale Semiconductor
109
10.3.6 Baud Rate
The communication baud rate is controlled by crystal frequency and the state of the PTC3 pin upon entry
into monitor mode. When PTC3 is high, the divide by ratio is 1024. If the PTC3 pin is at logic zero upon
entry into monitor mode, the divide by ratio is 512.
Table 10-7. READSP (Read Stack Pointer) Command
Description
Reads stack pointer
Operand
None
Data Returned
Returns stack pointer in high byte:low byte order
Opcode
$0C
Command Sequence
Table 10-8. RUN (Run User Program) Command
Description
Executes RTI instruction
Operand
None
Data Returned
None
Opcode
$28
Command Sequence
Table 10-9. Monitor Baud Rate Selection
Crystal
Frequency
(MHz)
PTC3
pin
Baud Rate
4.9152MHz
0
9600 bps
4.9152MHz
1
4800 bps
SP HIGH
READSP
READSP
SP LOW
ECHO
SENT TO
MONITOR
RESULT
RUN
RUN
ECHO
SENT TO
MONITOR
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