TDA8442 查看數據表（PDF） - Philips Electronics
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TDA8442 Datasheet PDF : 10 Pages
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Philips Semiconductors
I2C-bus interface for colour decoders
Product specification
TDA8442
I2C-BUS TIMING
Bus loading conditions: 4kΩ pull-up resistor to +5 V; 200 pF capacitor to GND.
All values are referred to VIH = 3 V and VIL = 1.5 V.
PARAMETER
SYMBOL
MIN.
Bus free before start
tBUF
4.0
Start condition set-up time
tSU; STA
4.0
Start condition hold time
tHD; STA
4.0
LOW period SCL, SDA
tLOW
4.0
HIGH period SCL
tHIGH
4.0
Rise time SCL, SDA
tr
−
Fall time SCL, SDA
tf
−
Data set-up time (write)
tSU; DAT
1
Data hold time (write)
tHD; DAT
1
Acknowledge (from TDA8442) set-up time tSU; ACK
−
Acknowledge (from TDA8442) hold time tHD; ACK
0
Stop condition set-up time
tSU; STO
4.0
TYP.
−
−
−
−
−
−
−
−
−
−
−
−
MAX.
−
−
−
−
−
1.0
0.30
−
−
3.5
−
−
UNIT
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
Reference levels are 10 and 90%.
Fig.5 I2C-bus timing; TDA8442.
March 1991
8
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