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NCA9539-Q1TSXR

Novosense
NCA9539-Q1 16-bit I2C-bus I/O port with interrupt and reset Datasheet (EN) 0.0 Product Overview The NCA9539-Q1 is a 24-pin device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for the two-line bidirectional I2C bus applications. The device can operate with a power supply voltage (VDD) range from 1.65 V to 3.6 V. It provides a simple solution when additional I/O...
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NCA9539-Q1 16-bit I2C-bus I/O port with interrupt and reset Datasheet (EN) 0.0 Product Overview The NCA9539-Q1 is a 24-pin device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for the two-line bidirectional I2C bus applications. The device can operate with a power supply voltage (VDD) range from 1.65 V to 3.6 V. It provides a simple solution when additional I/Os are needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The NCA9539-Q1 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 NCA9539-Q1 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. Also, the NCA9539-Q1 has a hardware RESET pin that can be used to reset the device to its default state. The hardware pins (A0, A1) vary the fixed I2C-bus address and allow up to four devices to share the same I2C-bus. Noise filter on SCL/SDA inputs Polarity Inversion register Internal power-on reset No glitch on power-up Address by two hardware address pins for use of up to four devices  Latched outputs with high-current drive capability for directly driving LEDs  Latch-up performance exceeds 100 mA per JESD 78, class II  ESD protection exceeds JESD 22: 2000 V HBM, 200 V MM, and 1000 V CDM      Applications  Automotive infotainment, ADAS, automotive body electronics, HEV, EV and powertrain  Industrial automation, factory automation  GPIO expansion for I2C-bus applications  Servers, personal computers, personal electronics  Routers (telecom switching equipment)  Products with GPIO-Limited processors Device Information Part Number NCA9539-Q1TSXR Package TSSOP24 Body Size 7.80mm*4.40mm Functional Block Diagrams Key Features  AEC-Q100 (Grade 1): Qualified for automotive applications  I2C to Parallel Port Expander  Operating power supply voltage range of 1.65 V to 3.6 V  Low standby current  Open-drain active-low interrupt output  Active-low reset input  5 V tolerant, 16 I/O ports which default to input mode  Compatible with most microcontrollers  Up to 400 kHz Fast I2C bus Copyright © 2022, NOVOSENSE Figure 1. NCA9539-Q1 Block Diagram Page 1 PDF
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Дата модификации: 09.10.2022

Размер: 1.13 Мб

26 стр.

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