Datasheet

DocID16891 Rev 28 31/42
M24C64-W M24C64-R M24C64-F 
41
Figure 13. Maximum R
bus
value versus bus parasitic capacitance (C
bus
) for
an I
2
C bus at maximum frequency f
C
= 400 kHz
Figure 14. Maximum R
bus
value versus bus parasitic capacitance C
bus
) for
an I
2
C bus at maximum frequency f
C
= 1MHz
ai14796b
1
10
100
10 100 1000
Bus line capacitor (pF)
Bus line pull-up resistor
(k
)
I²C bus
master
M24xxx
R
bus
V
CC
C
bus
SCL
SDA
R
bus
×
C
bus
= 400 ns
Here R
bus
× C
bus
= 120 ns
4 k
30 pF
The R x C time constant
must be below the 400 ns
time constant line represented
on the left.
bus
bus
1
10
0
10 100
Bus line capacitor (pF)
Bus line pull-up resistor (k )
MS19745V1
I²C bus
master
M24xxx
R
bus
V
CC
C
bus
SCL
SDA
Here,
R
bus
×
C
bus
= 120 ns
R
bu
s
×
C
bu
s
= 150 ns
4
30
The R
bus
× C
bus
time constant
must be below the 150 ns
time constant line represented
on the left.
10