Datasheet > NCA9539PW

NCA9539PW

更新时间： 2023-09-03 20:36:07

品牌	Logo	应用领域
安世 - NEXPERIA		/
页数	文件大小	规格书
31页	439K
描述
Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registersProduction

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NCA9539PW 数据手册

NCA9539

Low-voltage 16-bit I²C and SMBus low-power I/O expander

with interrupt output, reset pin and configuration registers

Rev. 1 — 31 March 2023

Product data sheet

1. General description

The NCA9539 provides 16 bits of General Purpose Input/Output (GPIO) expansion with interrupt

and reset for I²C-bus/SMBus applications. It is designed for a wide voltage range of 1.65 V to

5.5 V. Nexperia GPIO expanders provide an elegant solution when additional IOs are needed while

keeping the interconnections to a minimum, for example, in ACPI power switches, sensors, push

buttons, LEDs and fan control. The NCA9539 contains a set of 8 bit input, output, configuration

and polarity inversion registers. At power up all IOs default to inputs. Each IO can be configured as

either input or output by changing the corresponding bit in the configuration register. The data for

each input or output is stored in the corresponding input or output register. The polarity inversion

drain interrupt output which is activated when any one of the GPIO changes from its corresponding

input port register state. INT can be connected to the interrupt input of a microcontroller. By

sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is

incoming data on its ports without having to communicate via the I²C-bus. Thus, NCA9539 can

remain a simple slave. The power on reset sets the registers to default values and initializes the

device state machine. The RESET pin can be used to achieve same reset functionality without

power down/up cycling by keeping active low. The state machine and the registers are in their

default state until the RESET input is once again HIGH. This input requires pull up to V_CC. The

NCA9539 has two address pins A0 and A1 which can be used to configure the I²C bus slave

address of the device. It allows up-to four devices to share the same I²C-bus/SMBus.

2. Features and benefits

•

I²C-bus to parallel port expander

•

Operating power supply voltage range of 1.65 V to 5.5 V

Low standby current consumption:

•

2.5 µA (maximum)

•

Schmitt-trigger action allows slow input transition and better switching noise immunity at the

SCL and SDA inputs

•

V_hys= 0.10 × V_CC(typical)

Noise filter on SCL and SDA inputs

•

5 V tolerant I/Os

16 I/O pins which power up configured in input state

Open-drain active LOW interrupt output (INT)

Reset input for resetting NCA9539 to default values (RESET)

400 kHz Fast-mode I²C-bus

Internal power-on reset

No glitch on power-up

Latched outputs with 25 mA drive maximum capability for directly driving LEDs

Latch-up performance exceeds 100 mA per JESD78, Class II

ESD protection:

•

HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2000 V

CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 1000 V

•

Specified from -40 °C to +85 °C

12 3 4 5 6 7...31

中文翻译

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与NCA9539PW相关器件

型号	品牌	获取价格	描述	数据表
NCA9539PW-Q100	NEXPERIA	获取价格	Low-voltage 16-bit I²C and SMBus low-power I/
NCA9539-Q1	NOVOSENSE	获取价格	NCA9539-Q1是一款车规级24引脚CMOS器件，提供16位通用并行I2C总线数输入/
NCA9545	NOVOSENSE	获取价格	NCA9545是通过I2C总线控制的四路双向转换开关。 SCL / SDA上行数据分散到四
NCA9546	NOVOSENSE	获取价格	NCA9546是通过I2C总线控制的四路双向转换开关。 SCL / SDA上行数据分散到四
NCA9548	NOVOSENSE	获取价格	NCA9548是通过I2C总线控制的八路双向转换开关。 SCL / SDA上行数据分散到八
NCA9555	NOVOSENSE	获取价格	NCA9555是一款24引脚CMOS器件，提供16位通用并行I2C总线数输入/输出GPIO
NCA9555B	NOVOSENSE	获取价格	NCA9555B是一款24引脚CMOS器件，提供16位通用并行I2C总线数输入/输出GPI
NCA9555BY	NEXPERIA	获取价格	Low-voltage 16-bit I²C and SMBus I/O expander
NCA9555BY-Q100	NEXPERIA	获取价格	Low-voltage 16-bit I²C and SMBus I/O expander
NCA9555PW	NEXPERIA	获取价格	Low-voltage 16-bit I²C and SMBus I/O expander

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