參數(shù)資料
型號： PCA9554AD,112
廠商： NXP Semiconductors
文件頁數(shù)： 1/35頁
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 8B 16SOIC
產(chǎn)品培訓模塊： I²C Bus Fundamentals
特色產(chǎn)品： NXP - I2C Interface
標準包裝： 48
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-SOIC（0.295"，7.50mm 寬）
供應商設備封裝： 16-SO
包裝： 管件
包括： POR
產(chǎn)品目錄頁面： 826 (CN2011-ZH PDF)
配用： 568-4002-ND - DEMO BOARD I2C
其它名稱： 568-1051-5
935269195112
PCA9554AD
1.
General description
The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General
Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and
were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.
The improvements include higher drive capability, 5 V I/O tolerance, lower supply current,
individual I/O configuration, 400 kHz clock frequency, and smaller packaging. I/O
expanders provide a simple solution when additional I/O is needed for ACPI power
switches, sensors, push buttons, LEDs, fans, and so on.
The PCA9554/PCA9554A consist 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 read register can be inverted with the Polarity Inversion register. All
registers can be read by the system master. Although pin-to-pin and I2C-bus address
compatible with the PCF8574 series, software changes are required due to the
enhancements and are discussed in Application Note AN469.
The PCA9554/PCA9554A 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/SMBus. The PCA9554A is identical to the PCA9554
except that the fixed I2C-bus address is different allowing up to sixteen of these devices
(eight of each) on the same I2C-bus/SMBus.
2.
Features and benefits
Operating power supply voltage range of 2.3 V to 5.5 V
5 V tolerant I/Os
Polarity Inversion register
Active LOW interrupt output
Low standby current
Noise filter on SCL/SDA inputs
No glitch on power-up
Internal power-on reset
8 I/O pins which default to 8 inputs
0 Hz to 400 kHz clock frequency
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt
Rev. 9 — 19 March 2013
Product data sheet
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9554AD118 制造商:NXP Semiconductors 功能描述:
PCA9554ADB 功能描述:I2C 接口集成電路 8-BIT I2C FM TP GPIO INT PU RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16
PCA9554ADB,112 功能描述:I2C 接口集成電路 8-BIT I2C FM TP GPIO RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16
PCA9554ADB,118 功能描述:I2C 接口集成電路 8-BIT I2C FM TP GPIO INT PU RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16
PCA9554ADB,118-CUT TAPE 制造商:NXP 功能描述:PCA9554 Series 8-bit I2C-bus and SMBus I/O port w/ Interrupt - SSOP-16
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