STV9937 datasheet(46/49 Pages) STMICROELECTRONICS

No de pièce	STV9937

Description	120-MHz On-Screen Display for Monitors including PictureBooSTTM and 4 True Independent Window Displays

PDF	49 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

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Electrical and Timing Characteristics

STV9937

46/49

12.4

I²C Bus Characteristics

Table 51: Characteristics of the SDA an SCL bus lines for F/S-mode I²C-bus devices

Symbol

Parameter

Standard mode

Fast mode

Unit

Min.

Max.

Min.

Max.

I²C Interface: SDA and SCL

tSP

Pulse width of spikes which must be suppressed

by the input filter

n/a

fSCL

SCL clock frequency

100

400

kHz

tHD;STA

Hold time (repeated) START Condition. After this

period, the first clock pulse is generated

4.0

0.6

µs

tLOW

LOW period of the SCL clock

4.7

1.3

µs

tHIGH

HIGH period of the SCL clock

4.0

0.6

µs

tSU; tSTA

Set-up time for a repeated START condition

4.7

0.6

µs

tHD;DAT

Data hold time

3.45

0.9

µs

tSU;DAT

Data set-up time

250

100

Rise time of both SCL and SDA signals

1000

20 + 0.1Cb

300

Fall time of both SCL and SDA signals

300

20 + 0.1Cb

300

tSU; tSTO

Set-up time for STOP condition

4.0

0.6

µs

tBUF

Bus free time between a STOP and a START

condition

4.7

1.3

µs

Capacitive load for each bus line

400

Figure 16: Definition of Timing for F/S-modes

handbook, full page width

tSU;STO

tSU;STA

tHD;STA

tHIGH

tLOW

tSU;DAT

tHD;DAT

SDA

SCL

tBUF

tSP

tHD;STA

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