參數(shù)資料
型號(hào): PCA9554BS3,118
廠商: NXP Semiconductors
文件頁(yè)數(shù): 33/35頁(yè)
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 8B 16HVQFN
標(biāo)準(zhǔn)包裝: 6,000
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-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 16-HVQFN
包裝: 帶卷 (TR)
包括: POR
其它名稱: 935283051118
PCA9554BS3-T
PCA9554BS3-T-ND
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
7 of 35
NXP Semiconductors
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt
6.1.2 Register 0 - Input Port register
This register is a read-only port. It reflects the incoming logic levels of the pins, regardless
of whether the pin is defined as an input or an output by Register 3. Writes to this register
have no effect.
The default ‘X’ is determined by the externally applied logic level, normally ‘1’ when no
external signal externally applied because of the internal pull-up resistors.
6.1.3 Register 1 - Output Port register
This register reflects the outgoing logic levels of the pins defined as outputs by Register 3.
Bit values in this register have no effect on pins defined as inputs. Reads from this register
return the value that is in the flip-flop controlling the output selection, not the actual pin
value.
Table 5.
Register 0 - Input Port register bit description
Bit
Symbol
Access
Value
Description
7
I7
read only
X
determined by externally applied logic level
6
I6
read only
X
5
I5
read only
X
4
I4
read only
X
3
I3
read only
X
2
I2
read only
X
1
I1
read only
X
0
I0
read only
X
Table 6.
Register 1 - Output Port register bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
O7
R
1*
reflects outgoing logic levels of pins defined as
outputs by Register 3
6O6
R
1*
5O5
R
1*
4O4
R
1*
3O3
R
1*
2O2
R
1*
1O1
R
1*
0O0
R
1*
相關(guān)PDF資料
PDF描述
PCA9557D,118 IC I/O EXPANDER I2C 8B 16SOIC
PCA9557PW,112 IC I/O EXPANDER I2C 8B 16TSSOP
ATMEGA48P-20MMUR MCU AVR 4K FLASH 20MHZ 28QFN
ATTINY461-15MZ MCU AVR 4K FLASH 15MHZ 32-QFN
MIC74YQS TR IC I/O EXPANDER I2C 8B 16QSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9554BS-T 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
PCA9554CBS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up
PCA9554CBSHP 功能描述:接口-I/O擴(kuò)展器 8b I2C/SMBus IO Port I2C Fixed Address 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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9554CPW 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up
PCA9554CPWJ 功能描述:接口-I/O擴(kuò)展器 8b I2C/SMBus IO Port I2C Fixed Address 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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel