NCA9555

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NCA9555 16-bit I2C-bus I/O port with interrupt Datasheet (EN) 1.4 Product Overview The NCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus applications. It provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The NCA9555 consists of two 8-bit Configuratio...
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Технические характеристики

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Корпус TSSOP-24
Входной интерфейс
Выходной интерфейс
Примечание 16-bit I2C-bus I/O port with interrupt
Диапазон рабочих температур
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NCA9555 16-bit I2C-bus I/O port with interrupt Datasheet (EN) 1.4 Product Overview The NCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus applications. It provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The NCA9555 consists of two 8-bit Configuration (Input or Output selection); Input, Output and Polarity Inversion (active HIGH or active LOW operation) registers. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each Input or Output is kept in the corresponding Input or Output register. The polarity of the read register can be inverted with the Polarity Inversion register. All registers can be read by the system master. The NCA9555 open-drain interrupt output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine. Three hardware pins (A0, A1, A2) vary the fixed I2C-bus address and allow up to eight devices to share the same I2C-bus. Key Features  Operating power supply voltage range of 2.3 V to 5.5 V  5 V tolerant I/Os  I2C to Parallel Port Expander  Polarity Inversion register  Active LOW interrupt output  Compatible With Most Microcontrollers  Address by Three Hardware Address Pins for Use of up to Eight Devices  Latched Outputs With High-Current Drive Capability for Directly Driving LEDs  Low standby current  Noise filter on SCL/SDA inputs  No glitch on power-up  Internal power-on reset  16 I/O pins which default to 16 inputs  0 Hz to 400 kHz clock frequency  ESD protection exceeds 2000 V HBM, and 1000 V CDM  Latch-up testing exceeds 100 mA Applications  GPIO expansion for I2C-bus applications  Servers  Routers (Telecom Switching Equipment)  Personal Computers  Personal Electronics  Products with GPIO-Limited Processors Device Information Part Number NCA9555 Package TSSOP24 Body Size 7.80mm*4.40mm Functional Block Diagrams Figure 1. NCA9555 Block Diagram PDF
Документация на NCA9555 

AD7792/AD7793 3-Channel, Low Noise, Low Power, 16/24-Bit ∑-Δ ADC with On-Chip In-Amp and Reference Data Sheet (Rev. A) Keywords:

Дата модификации: 05.05.2022

Размер: 2.67 Мб

25 стр.

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