1995 Mar 07 11
Philips Semiconductors Product specification
I2C-bus controlled YUV/RGB switch TDA8443A
TIMING CHARACTERISTICS
I2C-bus load conditions: 4 kΩ pull-up resistor to +5V; 200pF capacitor to GND;
all values are referenced to VIH = 3V and VIL = 1.5 V; see Fig.4.
Note
1. Timing tHD;DAT deviates from the I2C-bus specification. After reset has been activated, a delay of 50 µs must occur
before transmission may be resumed.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX.
tBUF time bus must be free before start 4.7 −µs
t
SU;STA set-up time for start condition 4.7 −µs
t
HD;STA hold time for start condition 4.0 −µs
t
LOW SCL and SDA LOW time 4.7 −µs
t
HIGH SCL HIGH time 4.0 −µs
t
rSCL and SDA rise time −1.0 µs
tfSCL and SDA fall time −0.3 µs
tSU;DAT data set-up time (write) 250 −ns
tHD;DAT data hold time (write) note 1 1.0 −µs
t
SU;ACK acknowledge set-up time −2µs
tHD;ACK acknowledge hold time 0 −µs
t
SU;STO set-up time for stop condition 4.7 −µs
Fig.4 I2C-bus timing diagram.
handbook, full pagewidth
MLD005
SDA
(WRITE)
SCL
tBUF
tSU; STA
tHD; STA
tLOW
tftr
tHD; DAT tSU; ACK tHD; ACK
tLOW
tSU; STO
tHIGH
tSU; DAT