參數(shù)資料
型號： PCA9671
廠商： NXP Semiconductors N.V.
英文描述： Remote 16-bit I/O expander for Fm+ I2C-bus with reset
中文描述： 遠(yuǎn)程16位I / O擴(kuò)展調(diào)頻的I2C總線與復(fù)位
文件頁數(shù)： 21/34頁
文件大?。?/td> 183K
代理商： PCA9671
PCA9671_1
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 20 December 2006
21 of 34
NXP Semiconductors
PCA9671
Remote 16-bit I/O expander for Fm+ I
2
C-bus with reset
13. Dynamic characteristics
[1]
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.
C
b
= total capacitance of one bus line in pF.
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.
[2]
[3]
[4]
Table 6.
V
DD
= 2.3 V to 5.5 V; V
SS
= 0 V; T
amb
=
40
°
C to +85
°
C; unless otherwise specified.
Symbol
Parameter
Conditions
Dynamic characteristics
Standard-mode
I
2
C-bus
Min
0
4.7
Fast-mode I
2
C-bus
Fast-mode
Plus I
2
C-bus
Min
0
0.5
Unit
Max
100
-
Min
0
1.3
Max
400
-
Max
1000
-
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
[1]
data valid time
[2]
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
[6]
Port timing; C
L
≤
100 pF (see
Figure 17
and
Figure 16
)
t
v(Q)
data output valid time
t
su(D)
data input set-up time
t
h(D)
data input hold time
Reset timing (see
Figure 26
)
t
w(rst)
reset pulse width
t
rec(rst)
reset recovery time
t
rst
reset time
kHz
μ
s
t
HD;STA
4.0
-
0.6
-
0.26
-
μ
s
t
SU;STA
4.7
-
0.6
-
0.26
-
μ
s
t
SU;STO
4.0
-
0.6
-
0.26
-
μ
s
t
HD;DAT
t
VD;ACK
0
-
0
-
0
-
ns
μ
s
0.3
3.45
0.1
0.9
0.05
0.45
t
VD;DAT
t
SU;DAT
t
LOW
300
250
4.7
-
-
-
50
100
1.3
-
-
-
50
50
0.5
450
-
-
ns
ns
μ
s
t
HIGH
4.0
-
0.6
-
0.26
-
μ
s
t
f
[4][5]
-
300
20 + 0.1C
b
[3]
300
-
120
ns
t
r
-
1000
20 + 0.1C
b
[3]
300
-
120
ns
t
SP
-
50
-
50
-
50
ns
-
0
4
4
-
-
-
0
4
4
-
-
-
0
4
4
-
-
μ
s
μ
s
μ
s
4
0
-
-
-
4
0
-
-
-
4
0
-
-
-
ns
ns
ns
100
100
100
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PCA9671D 功能描述:接口-I/O擴(kuò)展器 16-BIT I2C FM+ QB GPIO RST PU RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
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