參數(shù)資料
型號(hào): PCA9554D,112
廠商: NXP Semiconductors
文件頁(yè)數(shù): 35/35頁(yè)
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 8B 16SOIC
產(chǎn)品培訓(xùn)模塊: I²C Bus Fundamentals
特色產(chǎn)品: NXP - I2C Interface
標(biāo)準(zhǔn)包裝: 48
接口: I²C,SM 總線
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)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(yīng)商設(shè)備封裝: 16-SO
包裝: 管件
包括: POR
產(chǎn)品目錄頁(yè)面: 826 (CN2011-ZH PDF)
配用: 568-4002-ND - DEMO BOARD I2C
其它名稱: 568-1053-5
935269192112
PCA9554D
PCA9554_9554A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 9 — 19 March 2013
9 of 35
NXP Semiconductors
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt
6.3 Interrupt output
The open-drain interrupt output is activated when one of the port pins change state and
the pin is configured as an input. The interrupt is deactivated when the input returns to its
previous state or the Input Port register is read.
Note that changing an I/O from and output to an input may cause a false interrupt to occur
if the state of the pin does not match the contents of the Input Port register.
6.4 I/O port
When an I/O is configured as an input, FETs Q1 and Q2 are off, creating a
high-impedance input with a weak pull-up (100 k
typ.) to V
DD. The input voltage may be
raised above VDD to a maximum of 5.5 V.
If the I/O is configured as an output, then either Q1 or Q2 is enabled, depending on the
state of the Output Port register. Care should be exercised if an external voltage is applied
to an I/O configured as an output because of the low-impedance paths that exist between
the pin and either VDD or VSS.
Remark: At power-on reset, all registers return to default values.
Fig 8.
Simplified schematic of IO0 to IO7
VDD
IO0 to IO7
output port
register data
configuration
register
DQ
CK
Q
data from
shift register
write configuration
pulse
output port
register
DQ
CK
write pulse
polarity inversion
register
DQ
CK
data from
shift register
write polarity
pulse
input port
register
DQ
CK
read pulse
input port
register data
polarity inversion
register data
002aac493
FF
data from
shift register
FF
Q1
Q2
VSS
to INT
100 k
Ω
相關(guān)PDF資料
PDF描述
PCA9554APW,112 IC I/O EXPANDER I2C 8B 16TSSOP
ATTINY24A-SSUR MCU AVR 2KB FLASH 20MHZ 14SOIC
PCA9621D,118 IC BUS OUTPUT PORT 2WIRE 16SOIC
PCA9536DP/DG,118 IC I/O EXPANDER I2C 4B 8TSSOP
PCF8575TS/1,118 IC I/O EXPANDER I2C 16B 24SSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9554D118 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述:
PCA9554DB 功能描述:I2C 接口集成電路 I2C I/O EXPANDER GP 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
PCA9554DB,112 功能描述:I2C 接口集成電路 I2C I/O EXPANDER GP 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
PCA9554DB,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
PCA9554DB 制造商:Texas Instruments 功能描述:I/O EXPANDER IC