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M34E02-F Datasheet(PDF) 10 Page - STMicroelectronics

Part # M34E02-F
Description  Backward compatible with the M34C02
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M34E02-F Datasheet(HTML) 10 Page - STMicroelectronics

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Signal description
M34E02-F
10/36
DocID10367 Rev 14
2.5.4
Power-down conditions
During power-down (continuous decrease in VCC), the device must be in Standby Power
mode (mode reached after decoding a Stop condition, assuming that there is no internal
write cycle in progress).
Figure 4. Maximum RP value versus bus parasitic capacitance (C) for an I2C bus
Figure 5. I2C bus protocol
1
10
100
10
100
1000
Bus line capacitor (pF)
When tLOW = 1.3 μs (min value for
fC = 400 kHz), the Rbus × Cbus
time constant must be below the
400 ns time constant line
represented on the left.
I²C bus
master
M34xxx
Rbus
VCC
Cbus
SCL
SDA
R
bu
s ×
C
bu
s =
400
ns
Here Rbus × Cbus = 120 ns
4 k
30 pF
MS31686V1
SCL
SDA
SCL
SDA
SDA
Start
condition
SDA
Input
SDA
Change
AI00792c
Stop
condition
1
23
7
89
MSB
ACK
Start
condition
SCL
1
23
7
89
MSB
ACK
Stop
condition



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