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| PCA9548A Datasheet, PDF (13/23 Pages) NXP Semiconductors – 8-channel I2C switch with reset | |||
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www.ti.com
PCA9548A
8-CHANNEL I2C SWITCH
WITH RESET
SCPS143B â OCTOBER 2006 â REVISED MARCH 2007
PARAMETER MEASUREMENT INFORMATION
VCC
SDA
DUT
RL = 1 kâ¦
CL = 50 pF
(see Note A)
SDA LOAD CONFIGURATION
Three Bytes for Complete
Device Programming
Stop
Condition
(P)
Start
Condition
(S)
Address
Bit 7
(MSB)
Address
Bit 6
Address
Bit 1
R/W
Bit 0
(LSB)
ACK
(A)
Data
Bit 7
(MSB)
Data
Stop
Bit 0 Condition
(LSB)
(P)
SCL
SDA
tscl
tsch
ticr
tbuf
ticf
tvd(ack)
tsts
tsp
tvdH(Data)
ticf
tsth
Start or
Repeat Start
Condition
ticr
tsds
tsdh
tvdL(Data)
tsps
Repeat Start
Condition
Stop
Condition
VOLTAGE WAVEFORMS
0.7 Ã VCC
0.3 Ã VCC
0.7 Ã VCC
0.3 Ã VCC
BYTE
1
2, 3
DESCRIPTION
I2C address
P-port data
A. CL includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ⤠10 MHz, ZO = 50 â¦, tr/tf ⤠30 ns.
C. Not all parameters and waveforms are applicable to all devices.
Figure 9. I2C Load Circuit and Voltage Waveforms
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