PCA9535A 查看數據表（PDF） - NXP Semiconductors.

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PCA9535A

Low-voltage 16-bit I2C-bus I/O port with interrupt

NXP Semiconductors. 

NXP Semiconductors

PCA9535A

Low-voltage 16-bit I2C-bus I/O port with interrupt

14. Parameter measurement information

a. SDA load configuration

DUT

VDD

SDA

RL = 1 kΩ

CL = 50 pF

002aag803

STOP START

condition condition

(P)

(S)

Address

Bit 7

(MSB)

b. Transaction format

two bytes for read Input port register(1)

Address

Bit 1

R/W

Bit 0

(LSB)

ACK

(A)

Data

Bit 7

(MSB)

Data

Bit 0

(LSB)

STOP

condition

(P)

002aag952

SCL

SDA

tBUF

tf

tHD;STA

tLOW

tHIGH

tSP

tr

tf

tr

tSU;DAT

tVD;DAT

tf(o)

tVD;ACK

tSU;STA

tHD;DAT

tVD;ACK

repeat START condition

STOP condition

0.7 × VDD

0.3 × VDD

tSU;STO

0.7 × VDD

0.3 × VDD

002aag804

c. Voltage waveforms

CL includes probe and jig capacitance.

All inputs are supplied by generators having the following characteristics: PRR  10 MHz; Zo = 50 ; tr/tf  30 ns.

All parameters and waveforms are not applicable to all devices.

Byte 1 = I2C-bus address; Byte 2, byte 3 = P port data.

(1) See Figure 9.

Fig 26. I2C-bus interface load circuit and voltage waveforms

PCA9535A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 11 September 2012

© NXP B.V. 2012. All rights reserved.

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