PCA9698BS,118

 

1. General 

description

The PCA9698 provides 40-bit parallel input/output (I/O) port expansion for I

2

C-bus 

applications organized in 5 banks of 8 I/Os. At 5 V supply voltage, the outputs are capable 
of sourcing 10 mA and sinking 25 mA with a total package load of 1 A to allow direct 
driving of 40 LEDs. Any of the 40 I/O ports can be configured as an input or output.

The PCA9698 is the first GPIO device in a new Fast-mode Plus (Fm+) family. Fm+ 
devices offer higher frequency (up to 1 MHz) and longer, more densely populated bus 
operation (up to 4000 pF).

The device is fully configurable: output ports can be programmed to be totem-pole or 
open-drain and logic states can change at either the Acknowledge (bank change) or the 
Stop Command (global change), each input port can be masked to prevent it from 
generating interrupts when its state changes, I/O data logic state can be inverted when 
read by the system master.

An open-drain interrupt output pin (INT) allows monitoring of the input pins and is asserted 
each time a change occurs in one or several input ports (unless masked).

The Output Enable pin (OE) 3-states any I/O selected as output and can be used as an 
input signal to blink or dim LEDs (PWM with frequency > 80 Hz and change duty cycle).

A ‘GPIO All Call’ command allows to program multiple Advanced GPIOs at the same time 
even if they have different I

2

C-bus addresses. This allows optimal code programming 

when more than one device needs to be programmed with the same instruction or if all 
outputs need to be turned on or off at the same time (for example, LED test).

The Device ID, hard coded in the PCA9698, allows the system master to read 
manufacturer, part type and revision information.

The SMBus Alert feature allows the SMBALERT pins of multiple devices with this feature 
to be connected together to form a wired-AND signal and to be used in conjunction with 
the SMBus Alert Response Address.

The internal Power-On Reset (POR) or hardware reset pin (RESET) initializes the 40 I/Os 
as inputs. Three address select pins configure one of 64 slave addresses.

The PCA9698 is available in 56-pin TSSOP and HVQFN packages and is specified over 
the 

−40 °C to +85 °C industrial temperature range.

2.  Features and benefits

„

1 MHz Fast-mode Plus I

2

C-bus serial interface

„

Compliant with I

2

C-bus Fast-mode (400 kHz) and Standard-mode (100 kHz)

PCA9698

40-bit Fm+ I

2

C-bus advanced I/O port with RESET, OE and INT

Rev. 3 — 3 August 2010

Product data sheet

PCA9698BS,118 Datasheet Related Products:
PCA9698BS,118 Information:
Part No.
PCA9698BS,118
Description
IC I/O EXPANDER I2C 40B 56HVQFN
File Size
370946 bytes
Page Size
595.22 x 842 pts (A4)
All Pages
48
Manufacturer
NXP Semiconductors
Homepage
http://www.nxp.com/
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