參數(shù)資料
型號: 101-0599
廠商: Rabbit Semiconductor
文件頁數(shù): 27/106頁
文件大?。?/td> 0K
描述: COMPUTER SNGLBD BL2500 512K FLSH
標(biāo)準(zhǔn)包裝: 10
系列: SBC
模塊/板類型: 單板計算機模塊
適用于相關(guān)產(chǎn)品: BL2500
User’s Manual
21
3.3 Digital I/O
3.3.1 Digital Inputs
The Coyote has 16 digital inputs, IN00–IN15. IN00–IN13 and IN15 are each protected
over a range of –36 V to +36 V, and IN14 is protected over a range of –36 V to +5 V. The
inputs are factory-configured to be pulled up to +3.3 V; IN00–IN07 can also be pulled up
to +K or they can be pulled down to 0 V by changing a surface-mounted 0
resistor.
Figure 10 shows a sample digital input circuit. IN00-IN07 and IN15 are protected against
noise spikes by a low-pass filter composed of a 22 k
series resistor and a 10 nF capacitor.
Figure 10. Coyote Digital Inputs [Pulled Up—Factory Default]
Coyote series boards can be made to order in
volume with the digital inputs pulled up to +K or
pulled down to 0 V. Contact your authorized Rab-
bit distributor or your sales representative at for
more information.
The actual switching threshold between a zero
and a one is between 0.9 V and 2.3 V for all 16
inputs.
IN00–IN13 and IN15 are each fully protected
over a range of -36 V to +36 V, and can handle
short spikes of ±40 V. IN14 is protected over a
range of -36 V to +5 V.
Figure 11. Coyote Digital Input
Protected Range
10 nF
22 kW
100 kW
Factory
Default
+3.3 V
GND
0 W
Rabbit 3000
Microprocessor
R58
R56
+K
R55
+40 V
+36 V
+3.3 V
40 V
Normal Switching
Levels
Spikes
Digital
Input
V
oltage
Spikes
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