參數(shù)資料
型號: 9531
廠商: NXP Semiconductors N.V.
英文描述: 8-bit I2C LED dimmer
中文描述: 8位I2C LED調光
文件頁數(shù): 15/20頁
文件大?。?/td> 154K
代理商: 9531
Philips Semiconductors
Product data
PCA9531
8-bit I
2
C LED dimmer
2003 Nov 10
15
handbook, full pagewidth
PROTOCOL
SCL
SDA
tHD;STA
tSU;DAT
tHD;DAT
tVD;DAT
tf
r
t
tBUF
tSU;STA
tLOW
tHIGH
1 / fSCL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
tVD;ACK
SW02143
BIT 8
(R/W)
ACKNOWLEDGE
(A)
STOP
CONDITION
(S)
t
SU;STO
Figure 20. I
2
C-bus timing diagram; rise and fall times refer to V
IL
and V
IH
PULSE
GENERATOR
V
I
V
O
C
L
50Pf
V
DD
DEFINITIONS
R
L
=
Load resistor.
C
L
=
Load capacitance includes jig and probe capacitance
R
T
=
Termination resistance should be equal to the output
impedance Z
O
of the pulse generators.
V
DD
Open
R
T
D.U.T.
R
L
= 500
SW02142
Figure 21. Test circuitry for switching times
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