PCA9505_9506 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Product data sheet Rev. 4 — 3 August 2010 22 of 34
NXP Semiconductors
PCA9505/06
40-bit I
2
C-bus I/O port with RESET, OE and INT
[1] V
DD
must be lowered to 0.2 V in order to reset part.
12. Dynamic characteristics
Inputs A0, A1, A2
V
IL
LOW-level input voltage 0.5 - +0.3V
DD
V
V
IH
HIGH-level input voltage 0.7V
DD
-5.5V
I
LI
input leakage current 1- +1μA
C
i
input capacitance - 3.5 5 pF
Table 10. Static characteristics
…continued
V
DD
= 2.3 V to 5.5 V; V
SS
=0V; T
amb
=
40
°
C to +85
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Table 11. Dynamic characteristics
Symbol Parameter Conditions Standard mode
I
2
C-bus
Fast mode I
2
C-bus Unit
Min Max Min Max
f
SCL
SCL clock frequency
[1]
0 100 0 400 kHz
t
BUF
bus free time between a STOP and
START condition
4.7 - 1.3 - μs
t
HD;STA
hold time (repeated) START
condition
4.0 - 0.6 - μs
t
SU;STA
set-up time for a repeated START
condition
4.7 - 0.6 - μs
t
SU;STO
set-up time for STOP condition 4.0 - 0.6 - μs
t
HD;DAT
data hold time 0 - 0 - ns
t
VD;ACK
data valid acknowledge time
[2]
0.1 3.45 0.1 0.9 μs
t
VD;DAT
data valid time
[3]
0.1 3.45 0.1 0.9 μs
t
SU;DAT
data set-up time 250 - 100 - ns
t
LOW
LOW period of the SCL clock 4.7 - 1.3 - μs
t
HIGH
HIGH period of the SCL clock 4.0 - 0.6 - μs
t
f
fall time of both SDA and SCL
signals
[4][5]
- 300 20 + 0.1C
b
[6]
300 ns
t
r
rise time of both SDA and SCL
signals
[4][5]
- 1000 20 + 0.1C
b
[6]
300 ns
t
SP
pulse width of spikes that must be
suppressed by the input filter
[7]
- 50 - 50 ns
Port timing
t
en
enable time output - 80 - 80 ns
t
dis
disable time output - 40 - 40 ns
t
v(Q)
data output valid time - 250 - 250 ns
t
su(D)
data input set-up time 100 - 100 - ns
t
h(D)
data input hold time 0.5 - 0.5 - μs
Interrupt timing
t
v(INT_N)
valid time on pin INT_N - 4 - 4 μs
t
rst(INT_N)
reset time on pin INT_N - 4 - 4 μs
PCA9505_9506 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Product data sheet Rev. 4 — 3 August 2010 23 of 34
NXP Semiconductors
PCA9505/06
40-bit I
2
C-bus I/O port with RESET, OE and INT
[1] Minimum SCL clock frequency is limited by the bus time-out feature, which resets the serial bus interface if either SDA or SCL is held
LOW for a minimum of 25 ms. Disable bus time-out feature for DC operation.
[2] t
VD;ACK
= time for Acknowledgement signal from SCL LOW to SDA (out) LOW.
[3] t
VD;DAT
= minimum time for SDA data out to be valid following SCL LOW.
[4] A master device must internally provide a hold time of at least 300 ns for the SDA signal (refer to the V
IL
of the SCL signal) in order to
bridge the undefined region SCL’s falling edge.
[5] The maximum t
f
for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA output stage t
f
is specified at
250 ns. This allows series protection resistors to be connected between the SDA and the SCL pins and the SDA/SCL bus lines without
exceeding the maximum specified t
f
.
[6] C
b
= total capacitance of one bus line in pF.
[7] Input filters on the SDA and SCL inputs suppress noise spikes less than 50 ns.
Reset
t
w(rst)
reset pulse width 4 - 4 - ns
t
rec(rst)
reset recovery time 0 - 0 - ns
t
rst
reset time 100 - 100 - ns
Table 11. Dynamic characteristics
…continued
Symbol Parameter Conditions Standard mode
I
2
C-bus
Fast mode I
2
C-bus Unit
Min Max Min Max
Fig 16. Definition of timing on the I
2
C-bus
t
SP
t
BUF
t
HD;STA
PP S
t
LOW
t
r
t
HD;DAT
t
f
t
HIGH
t
SU;DAT
t
SU;STA
Sr
t
HD;STA
t
SU;STO
SDA
SCL
002aaa986
PCA9505_9506 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Product data sheet Rev. 4 — 3 August 2010 24 of 34
NXP Semiconductors
PCA9505/06
40-bit I
2
C-bus I/O port with RESET, OE and INT
Rise and fall times refer to V
IL
and V
IH
.
Fig 17. I
2
C-bus timing diagram
SCL
SDA
t
HD;STA
t
SU;DAT
t
HD;DAT
t
f
t
BUF
t
SU;STA
t
LOW
t
HIGH
t
VD;ACK
002aab17
5
t
SU;STO
protocol
START
condition
(S)
bit 7
MSB
(A7)
bit 6
(A6)
bit 0
(R/W)
acknowledge
(A)
STOP
condition
(P)
1
/f
SCL
t
r
t
VD;DAT
Fig 18. Reset timing
SDA
SCL
002aac01
8
t
rst
50 %
30 %
50 % 50 %
50 %
t
rec(rst)
t
w(rst)
RESET
IOx_y
output off
START
t
rst
ACK or read cycle

PCA9506BS,118

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
Interface - I/O Expanders I/O EXPANDER I2C
Lifecycle:
New from this manufacturer.
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