9532 查看數據表（PDF） - NXP Semiconductors.

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9532

16-bit I²C-bus LED dimmer

NXP Semiconductors. 

NXP Semiconductors

PCA9532

16-bit I2C-bus LED dimmer

protocol

START

condition

(S)

bit 7

MSB

(A7)

bit 6

(A6)

SCL

SDA

tSU;STA

tBUF

tLOW tHIGH

1/fSCL

tr

tf

bit 0 acknowledge

(R/W)

(A)

STOP

condition

(P)

tHD;STA

tSU;DAT tHD;DAT

Rise and fall times refer to VIL and VIH.

Fig 21. I2C-bus timing diagram

tVD;DAT

tVD;ACK

tSU;STO

002aab175

12. Test information

PULSE

GENERATOR

VDD

VI

VO

DUT

RT

RL

500 Ω

VDD

open

VSS

CL

50 pF

002aab880

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

PCA9532_4

Product data sheet

Rev. 04 — 17 March 2009

© NXP B.V. 2009. All rights reserved.

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