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STTS2004 数据表(PDF) 48 Page - STMicroelectronics

部件名 STTS2004
功能描述  16 bytes Page Write within 5 ms
PDF  58 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STTS2004 数据表(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
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
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
450
330
400
375
350
430
300
500
250
600
200
750
150
1000
100
1500
75
2000
50
2800



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