VL6180 datasheet(36/73 Pages) STMICROELECTRONICS

36 / 73 page

I2C control interface

VL6180

36/73

DocID024986 Rev 14

4.1

I2C interface - timing characteristics

Timing characteristics are shown in Table 18. Please refer to Figure 28 for an explanation of

the parameters used.

Figure 28. I2C timing characteristics

Note:

All timing characteristics are measured with respect to VIL_MAX or VIH_MIN.

Table 18. I2C interface - timing characteristics

Symbol

Parameter

Minimum

Typical

Maximum

Unit

FI2C

Operating frequency

400(1)

1. The maximum bus speed may also be limited by the combination of load capacitance and pull-up resistor.

Please refer to the I2C specification for further information.

kHz

tLOW

Clock pulse width low

0.5

s

tHIGH

Clock pulse width high

0.26

s

tSP

Pulse width of spikes which are

suppressed by the input filter

tBUF

Bus free time between transmissions

0.5

s

tHD.STA

Start hold time

0.26

s

tSU.STA

Start set-up time

0.26

s

tHD.DAT

Data in hold time

s

tSU.DAT

Data in set-up time

SCL/SDA rise time

120

SCL/SDA fall time

120

tSU.STO

Stop set-up time

0.26

s

Ci/o

Input/output capacitance (SDA)

Cin

Input capacitance (SCL)

Load capacitance

125

SDA

SCL

tHD.STA

tHIGH

tSU.DAT

tHD.DAT

tSU.STA

tSU.STO

...

tHD.STA

tLOW

tBUF

stop

start

stop

start

VIH

VIL

VIH

VIL

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