VS6724 datasheet(108/118 Pages) STMICROELECTRONICS

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Electrical characteristics

VS6724

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6.6

I²C slave interface

VS6724 contains an I²C-type interface using two signals: a bidirectional serial data line

(SDA) and an input-only serial clock line (SCL). See

PLL operation for detailed description

of protocol.

Figure 40. Voltage level specification

Table 60.

Serial interface voltage levels(1)

Symbol

Parameter

Standard mode

Fast mode

Unit

Min.

Max.

Min.

Max.

VHYS

Hysteresis of Schmitt Trigger Inputs

VDD > 2 V

VDD < 2V

N/A

0.05 VDD

0.1 VDD

VOL1

VOL3

LOW level output voltage (open drain)

at 3mA sink current

VDD > 2 V

VDD < 2V

N/A

0.4

N/A

0.4

0.2 VDD

VOH

HIGH level output voltage

N/A

0.8 VDD

tOF

Output fall time from VIHmin to VILmax with

a bus capacitance from 10 pF to 400 pF

250

20+0.1Cb

(2)

250

tSP

Pulse width of spikes which must be

suppressed by the input filter

N/A

Maximum VIH = VDDmax + 0.5 V

Cb = capacitance of one bus line in pF

VIH = 0.7 * VDD

VIL = 0.3 * VDD

VOH = 0.8 * VDD

VOL = 0.2 * VDD

Input voltage levels

Output voltage levels

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