PCA9535CD datasheet(6/32 Pages) NXP

Part #	PCA9535CD

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

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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6 / 32 page

PCA9535_PCA9535C_3

Product data sheet

Rev. 03 — 4 October 2007

6 of 32

NXP Semiconductors

PCA9535; PCA9535C

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

Functional description

Refer to Figure 1 “Block diagram of PCA9535; PCA9535C”.

6.1 Device address

6.2 Registers

6.2.1 Command byte

The command byte is the ﬁrst byte to follow the address byte during a write transmission.

It is used as a pointer to determine which of the following registers will be written or read.

Fig 6.

PCA9535; PCA9535C device address

R/W

002aac219

programmable

slave address

fixed

Table 4.

Command byte

Command

Input port 0

Input port 1

Output port 0

Output port 1

Polarity Inversion port 0

Polarity Inversion port 1

Conﬁguration port 0

Conﬁguration port 1

PCA9535CD Datasheet(PDF) 6 Page - NXP Semiconductors