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PCA9535BS_08

16-bit I2C-bus and SMBus, low power I/O port with interrupt

NXP Semiconductors. 

NXP Semiconductors

PCA9535; PCA9535C

16-bit I2C-bus and SMBus, low power I/O port with interrupt

SDA

tBUF

SCL

tr

tLOW

tHD;STA

P

S

tHD;DAT

tf

tHIGH

tSU;DAT

Fig 20. Definition of timing on the I2C-bus

tHD;STA

tSP

tSU;STA

Sr

tSU;STO

P

002aaa986

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

Rise and fall times refer to VIL and VIH.

Fig 21. I2C-bus timing diagram

tSU;DAT tHD;DAT

tVD;DAT

tVD;ACK

tSU;STO

002aab175

SCL

IOn

tv(Q)

SCL

IOn

Fig 22. tv(Q) timing

tv(Q)

002aad327

PCA9535_PCA9535C_5

Product data sheet

Rev. 05 — 15 September 2008

© NXP B.V. 2008. All rights reserved.

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