參數(shù)資料
型號: PCA9552PW
廠商: NXP Semiconductors N.V.
元件分類: LED驅動器
英文描述: 16-bit I2C-bus LED driver with programmable blink rates
封裝: PCA9552BS<SOT616-1 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-1.html<1<Always Pb-free,;PCA9552D<SOT137-1 (SO24)|<<http://www.nxp.com/packages/SOT137-1.html<1<we
文件頁數(shù): 10/28頁
文件大?。?/td> 159K
代理商: PCA9552PW
PCA9552_5
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 05 — 9 March 2006
18 of 28
Philips Semiconductors
PCA9552
16-bit I2C-bus LED driver with programmable blink rates
Fig 19. Denition of timing on the I2C-bus
tSP
tBUF
tHD;STA
P
S
tLOW
tr
tHD;DAT
tf
tHIGH
tSU;DAT
tSU;STA
Sr
tHD;STA
tSU;STO
SDA
SCL
002aaa986
Rise and fall times refer to VIL and VIH.
Fig 20. 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
Fig 21. Reset timing
SDA
SCL
002aac193
trst
50 %
30 %
50 %
trec(rst)
tw(rst)
RESET
LEDn
LED off
START
trst
ACK or read cycle
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