參數(shù)資料
型號(hào)： PCA9506
廠商： NXP Semiconductors N.V.
英文描述： 40-bit I2C-bus I/O port with RESET, OE, and INT
中文描述： 40位I2C總線的I / O端口復(fù)位，光電，和INT
文件頁(yè)數(shù)： 21/30頁(yè)
文件大小： 145K
代理商： PCA9506
9397 750 14939
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 14 February 2006
21 of 30
Philips Semiconductors
PCA9506
40-bit I
2
C-bus I/O port with RESET, OE, and INT
12. Dynamic characteristics
[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.
t
VD;DAT
= minimum time for SDA data out to be valid following SCL LOW.
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 SCLs falling edge.
[3]
[4]
Table 11:
Symbol
Dynamic characteristics
Parameter
Conditions
Standard mode
I
2
C-bus
Min
0
4.7
Fast mode I
2
C-bus
Unit
Max
100
-
Min
0
1.3
Max
400
-
f
SCL
t
BUF
SCL clock frequency
bus free time between a STOP and
START condition
hold time (repeated) START
condition
set-up time for a repeated START
condition
set-up time for STOP condition
data hold time
data valid acknowledge time
[2]
data valid time
[3]
data set-up time
LOW period of the SCL clock
HIGH period of the SCL clock
fall time of both SDA and SCL
signals
rise time of both SDA and SCL
signals
pulse width of spikes that must be
suppressed by the input filter
Port timing
t
en
enable time
t
dis
disable time
t
v(Q)
data output valid time
t
su(D)
data input setup time
t
h(D)
data input hold time
Interrupt timing
t
v(INT_N)
valid time on pin INT_N
t
rst(INT_N)
reset time on pin INT_N
Reset
t
w(rst)
reset pulse width
t
rec(rst)
reset recovery time
t
rst
reset time
[1]
kHz
μ
s
t
HD;STA
4.0
-
0.6
-
μ
s
t
SU;STA
4.7
-
0.6
-
μ
s
t
SU;STO
t
HD;DAT
t
VD;ACK
t
VD;DAT
t
SU;DAT
t
LOW
t
HIGH
t
f
4.0
0
0.1
0.1
250
4.7
4.0
-
-
-
0.6
0
0.1
0.1
100
1.3
0.6
-
-
μ
s
ns
μ
s
μ
s
ns
μ
s
μ
s
ns
3.45
3.45
-
-
-
300
0.9
0.9
-
-
-
300
[4] [5]
20 + 0.1C
b
[6]
t
r
[4] [5]
-
1000
20 + 0.1C
b
[6]
300
ns
t
SP
[7]
-
50
-
50
ns
output
output
-
-
-
80
40
250
-
-
-
-
-
80
40
250
-
-
ns
ns
ns
ns
μ
s
100
0.5
100
0.5
-
-
4
4
-
-
4
4
μ
s
μ
s
4
0
-
-
-
4
0
-
-
-
ns
ns
ns
100
100
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