PCA9534D 查看數據表（PDF） - Philips Electronics
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PCA9534D Datasheet PDF : 17 Pages
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Philips Semiconductors
8-bit I2C and SMBus low power I/O port with interrupt
Product data sheet
PCA9534
SDA
tBUF
tLOW
tR
tF
tHD;STA
tSP
SCL
P
tHD;STA
S
tHD;DAT
tHIGH
tSU;DAT
tSU;STA
Sr
Figure 13. Definition of timing
tSU;STO
P
SU00645
AC SPECIFICATIONS
SYMBOL
PARAMETER
STANDARD MODE
I2C-bus
MIN
MAX
fSCL
Operating frequency
0
100
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
tVD;ACK
tVD;DAT
Data in hold time
Valid time for ACK condition2
Data out valid time3
0
—
0.3
3.45
300
—
tSU;DAT
Data setup time
250
—
tLOW
Clock LOW period
4.7
—
tHIGH
Clock HIGH period
4.0
—
tF
Clock/Data fall time
—
300
tR
Clock/Data rise time
—
1000
tSP
Pulse width of spikes that must be suppressed by the
—
50
input filters
Port Timing
tPV
Output data valid
tPS
Input data setup time
tPH
Input data hold time
Interrupt Timing
—
200
100
—
1
—
tIV
Interrupt valid
tIR
Interrupt reset
—
4
—
4
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
—
—
4
—
4
UNITS
kHz
µs
µs
µs
µs
ns
µs
ns
ns
µs
µs
ns
ns
ns
ns
ns
µs
µs
µs
2004 Sep 30
11
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