參數(shù)資料
型號(hào): MC68HC05X4CDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 147/156頁
文件大?。?/td> 3699K
代理商: MC68HC05X4CDW
Motorola CAN
MC68HC05X4
Motorola CAN
SYNC_SEG
System expects transitions to occur on the bus during
this period.
Transmit point A node in transmit mode will transfer a new value to the
MCAN bus at this point.
Sample point
A node in receive mode will sample the bus at this point.
If the three samples per bit option is selected then this point marks the
position of the third sample.
Time segment 1 (TSEG1) and time segment 2 (TSEG2) are
programmable as shown in Table 3.
The bit time is determined by the oscillator frequency, the baud rate
prescaler, and the number of bus clock cycles (t
SCL) per bit (as shown
above).
Figure 13. Segments within the bit time
TSEG 1
BIT_TIME
SYNC_SEG
TSEG 2
SYNC_SEG
1 clock cycle
tSCL
Sample point
Transmit point
Table 3. Time segment values
TSEG13 TSEG12 TSEG11 TSEG10 Time segment 1
TSEG22 TSEG21 TSEG20 Time segment 2
0
001
2 tSCL cycles
0
1
2 tSCL cycles
0
010
3 tSCL cycles
.
0
011
4 tSCL cycles
.
...
.
1
8 tSCL cycles
.
...
.
1
16 tSCL cycles
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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