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PCA9532 데이터시트(PDF) 20 Page - NXP Semiconductors

부품명 PCA9532
상세설명  16-bit I2C-bus LED dimmer
PDF  29 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9532 데이터시트(HTML) 20 Page - NXP Semiconductors

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PCA9532_4
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 17 March 2009
20 of 29
NXP Semiconductors
PCA9532
16-bit I2C-bus LED dimmer
12. Test information
Rise and fall times refer to VIL and VIH.
Fig 21. I2C-bus timing diagram
SCL
SDA
tHD;STA
tSU;DAT
tHD;DAT
tf
tBUF
tSU;STA
tLOW
tHIGH
tVD;ACK
002aab175
tSU;STO
protocol
START
condition
(S)
bit 7
MSB
(A7)
bit 6
(A6)
bit 0
(R/W)
acknowledge
(A)
STOP
condition
(P)
1/fSCL
tr
tVD;DAT
RL = load resistor for LEDn. RL for SDA and SCL > 1 kΩ (3 mA or less current).
CL = load capacitance includes jig and probe capacitance.
RT = termination resistance should be equal to the output impedance Zo of the pulse generators.
Fig 22. Test circuitry for switching times
PULSE
GENERATOR
VO
CL
50 pF
RL
500
Ω
002aab880
RT
VI
VDD
DUT
VDD
open
VSS



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