R-IN32M3 Datasheet, PDF (103/116 Pages) Renesas Technology Corp – LSI for Industrial Ethernet

R-IN32M3 Series Data Sheet
4. Electrical Specifications
4.8.8
I2C Interface
Parameter
Symbol Conditions
Normal mode
MIN MAX
High speed mode
Unit
MIN
MAX
SCL clock frequency
tSCL
CL = 30pF
0
100
0
Bus-free time between the stop condition tBUF
4.7
-
1.3
and start condition
400 kHz
-
μs
Hold time
SCL clock low-level width
SCL clock high-level width
Setup time for the start and restart
conditions
tHSTA
tSCLL
tSCLH
tSSTA
4.0
-
0.6
4.7
-
1.3
4.0
-
0.6
4.7
-
0.6
-
μs
-
μs
-
μs
-
μs
Data hold time For a CBUS compatible tHDAT
master
5.0
-
-
-
μs
For an IIC bus
0
-
0
0.9
μs
Data setup time
SDA and SCL signal rise time
SDA and SCL signal fall time
Stop condition setup time
Pules width of spike suppressed by input
filter
tSDAT
tSCLR
tSCLF
tSSTO
tSP
250
-
100
-
ns
-
1000 20 + 0.1Cb
300
ns
-
300 20 + 0.1Cb
300
ns
4.0
-
0.6
-
μs
-
-
0
50
ns
Capacitance load of each bus line
Cb
-
-
400
-
400
pF
< t_SCL> < t_SCLL> < t_SCLH>
SCLn (I/O)
< t_HSTA>
< t_HDAT>
SDAn (output)
< t_BUF>
Stop condition Start condition
< t_SDAT>
< t_SSTA>
< t_HSTA>
Restart
condition
< t_SP>
< t_SSTO>
Stop condition
Figure 4.22 I2C Access Timing Diagram
Remark 1 n = 0, 1
tSCLR and tSCLF are omitted from the diagram.
R18DS0008EJ0401
Feb 28, 2017
Page 103 of 110