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STR720 데이터시트(PDF) 250 Page - STMicroelectronics

부품명 STR720
상세설명  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 데이터시트(HTML) 250 Page - STMicroelectronics

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STR720 - CONTROLLER AREA NETWORK (CAN)
250/401
A given bit rate may be met by different bit time configurations, but for the proper function of
the CAN network the physical delay times and the oscillator’s tolerance range have to be
considered.
Figure 35. Bit Timing
Table 56. CAN Bit Time Parameters
Parameter
Range
Remark
BRP
[1 .. 32]
defines the length of the time quantum tq
Sync_Seg
1 tq
fixed length, synchronization of bus input to system clock
Prop_Seg
[1.. 8] tq
compensates for the physical delay times
Phase_Seg1
[1..8] tq
may be lengthened temporarily by synchronization
Phase_Seg2
[1.. 8] tq
may be shortened temporarily by synchronization
SJW
[1 .. 4] tq
may not be longer than either Phase Buffer Segment
This table describes the minimum programmable ranges required by the CAN protocol
1 Time Quantum
(t
q
)
Sync_
Prop_Seg
Phase_Seg1
Phase_Seg2
Sample Point
Nominal CAN Bit Time
Seg
1



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