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PCA9535A Datasheet PDF : 38 Pages
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NXP Semiconductors
PCA9535A
Low-voltage 16-bit I2C-bus I/O port with interrupt
13. Dynamic characteristics
Table 18. I2C-bus interface timing requirements
Over recommended operating free air temperature range, unless otherwise specified. See Figure 26.
Symbol Parameter
Conditions
Standard-mode
Fast-mode
Unit
I2C-bus
I2C-bus
Min Max
Min
Max
fSCL
tHIGH
tLOW
tSP
SCL clock frequency
HIGH period of the SCL clock
LOW period of the SCL clock
pulse width of spikes that must
be suppressed by the input filter
0
100
4
-
4.7
-
0
50
0
400 kHz
0.6
- s
1.3
- s
0
50 ns
tSU;DAT
tHD;DAT
tr
tf
data set-up time
data hold time
rise time of both SDA and SCL signals
fall time of both SDA and SCL signals
tBUF
bus free time between a STOP and
START condition
250
-
100
- ns
0
-
0
- ns
-
1000
20
300 ns
-
300
20
300 ns
(VDD / 5.5 V)
4.7
-
1.3
- s
tSU;STA
set-up time for a repeated START
condition
4.7
-
0.6
- s
tHD;STA
tSU;STO
tVD;DAT
hold time (repeated) START condition
set-up time for STOP condition
data valid time
SCL LOW to
SDA output valid
4
-
0.6
- s
4
-
0.6
- s
-
3.45
-
0.9 s
tVD;ACK data valid acknowledge time
ACK signal
from SCL LOW
to SDA (out) LOW
-
3.45
-
0.9 s
Table 19. Switching characteristics
Over recommended operating free air temperature range; CL 100 pF; unless otherwise specified. See Figure 27.
Symbol Parameter
Conditions
Standard-mode
I2C-bus
Fast-mode
I2C-bus
Min
Max
Min
Max
tv(INT)
trst(INT)
tv(Q)
tsu(D)
th(D)
valid time on pin INT
reset time on pin INT
data output valid time
data input set-up time
data input hold time
from P port to INT
from SCL to INT
from SCL to P port
from P port to SCL
from P port to SCL
-
1
-
1
-
1
-
1
-
400
-
400
0
-
0
-
300
-
300
-
Unit
s
s
ns
ns
ns
PCA9535A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 11 September 2012
© NXP B.V. 2012. All rights reserved.
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