PCA9698

General description

The PCA9698 provides 40-bit parallel input/output (I/O) port expansion for I²C-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 I²C-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 Cel to +85 Cel industrial temperature range.

Features

• 1 MHz Fast-mode Plus I²C-bus serial interface
• Compliant with I²C-bus Fast-mode (400 kHz) and Standard-mode (100 kHz)
• 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
• 40 configurable I/O pins that default to inputs at power-up
• Outputs:
• Programmable totem-pole (10 mA source, 25 mA sink) or open-drain (25 mA sink) with controlled edge rate output structure. Default to totem-pole on power-up.
• Active LOW Output Enable (OE) input pin 3-states all outputs. Polarity can be programmed to active HIGH through the I²C-bus. Defaults to OE on power-up.
• Output state change programmable on the Acknowledge or the STOP Command to update outputs byte-by-byte or all at the same time respectively. Defaults to Acknowledge on power-up.
• Inputs:
• Open-drain active LOW Interrupt (INT) output pin allows monitoring of logic level change of pins programmed as inputs
• Programmable Interrupt Mask Control for input pins that do not require an interrupt when their states change
• Polarity Inverter register allows inversion of the polarity of the I/O pins when read
• Active LOW SMBus Alert (SMBALERT) output pin allows to initiate SMBus 'Alert Response Address' sequence. Own slave address sent when sequence initiated.
• Active LOW Reset (RESET) input pin resets device to power-up default state
• GPIO All Call address allows programming of more than one device at the same time with the same parameters
• 64 programmable slave addresses using 3 address pins
• Readable Device ID (manufacturer, device type and revision)
• Designed for live insertion in PICMG applications
• Minimize line disturbance (I_OFF and power-up 3-state)
• Signal transient rejection (50 ns noise filter and robust I²C-bus state machine)
• Low standby current
• -40 Cel to +85 Cel operation
• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Packages offered: TSSOP56, and HVQFN56

Products/packages

Type number	North American Type number	Ordering code (12NC)	Product status	Package	Packing	Marking	Chemical content	Leadfree conversion date
PCA9698BS	PCA9698BS-T	9352 786 13118	Volume production	SOT684-1 (HVQFN56)	Reel Pack, SMD, 13"	Standard Marking	PCA9698BS	Always Pb-free
PCA9698DGG	PCA9698DGG	9352 786 14512	Volume production	SOT364-1 (TSSOP56)	Tube Dry Pack	Standard Marking	PCA9698DGG	Always Pb-free
PCA9698DGG	PCA9698DGG-T	9352 786 14518	Volume production	SOT364-1 (TSSOP56)	Reel Dry Pack, SMD, 13"	Standard Marking	PCA9698DGG	Always Pb-free

Pricing/ordering/availability

Type number	Ordering code(12NC)	Indicative price/unit($)	Region	Distributor	In stock	Inventory date	Buy online	Samples
PCA9698BS	9352 786  13118	3.1100	NA	DIGI-KEY CORPORATION	2,378	6/29/2008	Buy online	Order samples
			NA	DIGI-KEY CORPORATION	2,000	6/29/2008	Buy online
PCA9698DGG	9352 786  14512	3.1100	NA	DIGI-KEY CORPORATION	526	6/29/2008	Buy online	not available
			NA	AVNET ELECTRONICS MARKETING	310	7/4/2008	Buy online
PCA9698DGG	9352 786  14518	2.7300	NA	MOUSER ELECTRONICS	1,663	7/6/2008	Buy online	Order samples

Applications

• Servers
• RAID systems
• Industrial control
• Medical equipment
• PLCs
• Cell phones
• Gaming machines
• Instrumentation and test measurement

Related applications
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LCD display - discretes focus
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Intelligent washing machine
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Cellular phone - MMS functionality
LCD TV - MMS functionality
Set-top box - MMS functionality

Block diagrams/pinning

Technical documents

Application Notes

Support Documents

Parametrics/similar products

Type number	Package	Enable	Operating temp.(Cel)	I²C-bus interface	# of Bits	Interrupt output	Source Current per bit(mA)	I²C-bus(kHz)	Operating voltage(VDC)	Weak Pull-Up Current Source	Max Sink Current per bit(mA)	# of Addresses	Max Sink Current per package(mA)	Reset input pin
PCA9698BS	SOT684-1 (HVQFN56)	yes	-40~85	Fast Mode Plus 30 mA SDA outputs for 4000 pF bus	40	yes	10	1000	2.3~5.5	no internal pull up resistor	25	64	1000	yes
PCA9698DGG	SOT364-1 (TSSOP56)	yes	-40~85	Fast Mode Plus 30 mA SCL/SDA outputs for 4000 pF bus	40	yes	10	1000	2.3~5.5	no internal pull up resistor	25	64	1000	yes

Similar products

PCA9698 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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