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STTS2004 Folha de dados(PDF) 48 Page - STMicroelectronics

Nome de Peças STTS2004
Descrição Electrónicos  16 bytes Page Write within 5 ms
PDF  58 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STTS2004 Folha de dados(HTML) 48 Page - STMicroelectronics

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DC and AC parameters
STTS2004
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DocID024229 Rev 3
Figure 19. Maximum RPU value versus bus parasitic capacitance (CBUS) for an I2C bus at
maximum frequency fC = 1 MHz
Figure 20. Pull-up resistor values versus bus line capacitance
1
10
0
0
0
1
0
1
Bus line capacitor (pF)
master
STTS2004
R PU
V CC
C BUS
SCL
SDA
Here,
R
PU
× C
BUS
= 120 ns
R
PU
× C
BUS = 150
ns
4
30
The R
× C BUS time constant
must be below the 150 ns
time constant line represented
on the left.
10
PU
200
220
230
250
270
300
330
375
430
500
600
750
1,000
1,500
2,000
2,800
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0
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BUS CAPACITANCE (pF)
Pull-up resistor values vs. bus capacitance - RC = 150 ns For F>400 kHz
RPU (Ohm)
C (pF) RPU (Ohm)
750
200
700
220
650
230
600
250
550
270
500
300
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375
350
430
300
500
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75
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50
2800



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