參數(shù)資料
型號(hào)： SAE81C91
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PQCC28
封裝： PLASTIC, LCC-28
文件頁(yè)數(shù)： 27/41頁(yè)
文件大?。?/td> 521K
代理商： SAE81C91
07Feb95@09:05h Intermediate Version
Semiconductor Group
32
SAE 81C90/91
Figure 7
Lengthening a Bit Period
Figure 8
Shortening a Bit Period
Delay Times
The total delay is calculated from the following single delays:
q
2
× physical bus t
Bus (max. 100 ns acc. to CAN specification)
q
2
× input comparator t
Comp (depends on application circuit)
q
2
× output driver t
Driver (depends on application circuit)
q
1
× input to output of CAN controller t
InOut (max. 1 tSCL + 80 ns)
t
Delay = 2 × (tBus + tComp + tDriver) + tInOut
Recommendations
On the premise of the stated conditions, there are the following essential requirements to be
maintained:
t
TSeg1
≥ t
Seg2
tTSeg1 ≥
t
Delay
t
TSeg2
>
t
SJW
t
TSeg2
≥ 3 × t
SCL + tSJW
if bit SAM = 1 (otherwise bit recognition does not work).
相關(guān)PDF資料
PDF描述
SAF-C161O-LM3VHA 16-BIT, 20 MHz, MICROCONTROLLER, PQFP80
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