PCA9501 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

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PCA9501

8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

NXP Semiconductors. 

NXP Semiconductors

PCA9501

8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM

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)

Fig 24. I2C-bus timing

tHD;STA

tSU;DAT tHD;DAT

tVD;DAT

tVD;ACK

tSU;STO

002aab175

SCL

SDA

8th bit

word n

ACK

Fig 25. Write cycle timing

STOP

condition

Tcy(W)

START

condition

memory

address

002aad310

PCA9501_4

Product data sheet

Rev. 04 — 10 February 2009

© NXP B.V. 2009. All rights reserved.

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