參數(shù)資料
型號： PCA9538PW,118
廠商： NXP Semiconductors
文件頁數(shù)： 1/34頁
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 8B 16TSSOP
產(chǎn)品培訓模塊： I²C Bus Fundamentals
特色產(chǎn)品： NXP - I2C Interface
標準包裝： 1
接口： I²C，SM 總線
輸入/輸出數(shù)： 8
中斷輸出： 是
頻率 - 時鐘： 400kHz
電源電壓： 2.3 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-TSSOP（0.173"，4.40mm 寬）
供應商設(shè)備封裝： 16-TSSOP
包裝： 標準包裝
包括： POR
產(chǎn)品目錄頁面： 825 (CN2011-ZH PDF)
配用： 568-3615-ND - DEMO BOARD I2C
其它名稱： 568-1840-6
1.
General description
The PCA9538 is a 16-pin CMOS device that provides 8 bits of General Purpose parallel
Input/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications
and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.
I/O expanders provide a simple solution when additional I/O is needed for ACPI power
switches, sensors, push-buttons, LEDs, fans, etc.
The PCA9538 consists of an 8-bit Configuration register (input or output selection),
8-bit Input Port register, 8-bit Output Port register and an 8-bit Polarity Inversion register
(active HIGH or active LOW operation). 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 Port or Output Port register. The polarity of the Input
Port register can be inverted with the Polarity Inversion register. All registers can be read
by the system master.
The PCA9538 is identical to the PCA9554 except for the removal of the internal I/O
pull-up resistor which greatly reduces power consumption when the I/Os are held LOW,
replacement of A2 with RESET and different address range.
The PCA9538 open-drain interrupt output (INT) 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. The RESET pin causes the same
reset/initialization to occur without de-powering the device.
Two hardware pins (A0 and A1) vary the fixed I2C-bus address and allow up to four
devices to share the same I2C-bus/SMBus.
2.
Features and benefits
8-bit I2C-bus GPIO with interrupt and reset
Operating power supply voltage range of 2.3 V to 5.5 V
(5.0 V
10 % for PCA9538PW/Q900 AEC-Q100 compliant devices)
5 V tolerant I/Os
Polarity Inversion register
Active LOW interrupt output
Active LOW reset input
Low standby current
Noise filter on SCL/SDA inputs
No glitch on power-up
PCA9538
8-bit I2C-bus and SMBus low power I/O port with interrupt and
reset
Rev. 6 — 6 February 2013
Product data sheet
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參數(shù)描述
PCA9538PWG4 功能描述:接口-I/O擴展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9538PWR 功能描述:接口-I/O擴展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9538PWR 制造商:Texas Instruments 功能描述:IC I/O EXPANDER 8BIT 400KHZ TSSOP-16
PCA9538PWRG4 功能描述:接口-I/O擴展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9538RGTR 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
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