M24512-X 查看數據表（PDF） - STMicroelectronics
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M24512-X Datasheet PDF : 37 Pages
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Signal description
M24512-x, M24256-Bx
Figure 5. M24256-BF, M24xxx-R/W – Maximum Rbus value versus bus parasitic
capacitance (Cbus) for an I2C bus at maximum frequency fC = 400 kHz
100
10
1
10
100
Bus line capacitor (pF)
fC = 400 kHz, tLOW = 1.3 µs
Rbus x Cbus time
constant must be less than
500 ns
VCC
Rbus
1000
I²C bus
master
SCL
SDA
M24xxx
Cbus
ai14796
Figure 6. M24xxx-HR – Maximum Rbus value versus bus parasitic capacitance
(Cbus) for an I2C bus at maximum frequency fC = 1 MHz
100
10
1
10
Bus line capacitor (pF)
fC = 1 MHz, tLOW = 500 ns,
time constant Rbus x Cbus
must be less than 150 ns
fC = 1 MHz, extended case
where tLOW = 700 ns,
time constant Rbus x Cbus
must be less than 270 ns
VCC
Rbus
I²C bus
master
SCL
SDA
M24xxx
Cbus
100
ai14795b
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