9536 查看數據表（PDF） - Philips Electronics
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9536 Datasheet PDF : 16 Pages
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Philips Semiconductors
4-bit I2C and SMBus I/O port
Objective data sheet
PCA9536
AC SPECIFICATIONS
SYMBOL
PARAMETER
STANDARD MODE
I2C-bus
MIN
MAX
fSCL
Operating frequency
0
tBUF
Bus free time between STOP and START conditions
4.7
tHD;STA
Hold time after (repeated) START condition
4.0
tSU;STA
Repeated START condition setup time
4.7
tSU;STO
Setup time for STOP condition
4.0
tHD;DAT
Data in hold time
0
tVD;ACK
Valid time for ACK condition2
0.3
tVD;DAT
Data out valid time3
300
tSU;DAT
Data setup time
250
tLOW
Clock LOW period
4.7
tHIGH
Clock HIGH period
4.0
tF
Clock/Data fall time
—
tR
Clock/Data rise time
—
tSP
Pulse width of spikes that must be suppressed by the
—
input filters
100
—
—
—
—
—
3.45
—
—
—
—
300
1000
50
Port Timing
tPV
Output data valid
—
200
tPS
Input data setup time
100
—
tPH
Input data hold time
1
—
NOTES:
1. Cb = total capacitance of one bus line in pF.
2. tVD;ACK = time for Acknowledgement signal from SCL LOW to SDA (out) LOW.
3. tVD;DAT = minimum time for SDA data out to be valid following SCL LOW.
FAST MODE
I2C-bus
MIN
MAX
0
400
1.3
—
0.6
—
0.6
—
0.6
—
0
—
0.1
0.9
50
—
100
—
1.3
—
0.6
—
20 + 0.1 Cb1
300
20 + 0.1 Cb1
300
—
50
—
200
100
—
1
—
UNITS
kHz
µs
µs
µs
µs
ns
µs
ns
ns
µs
µs
ns
ns
ns
ns
ns
µs
SDA
tF
SCL
S
tLOW
tR
tSU;DAT
tF
tHD;STA
tHD;STA
tHD;DAT tHIGH
tSU;STA
SR
Figure 10. Definition of timing
tSP
tR
tBUF
tSU;STD
P
S
SU01469
2004 Aug 20
11
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