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參數(shù)資料
型號(hào)： PCA9555D,112
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 33/34頁(yè)
文件大小： 0K
描述： IC I/O EXPANDER I2C 16B 24SOIC
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： 30
接口： I²C，SM 總線
輸入/輸出數(shù)： 16
中斷輸出： 是
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： 24-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 24-SO
包裝： 管件
包括： POR
產(chǎn)品目錄頁(yè)面： 826 (CN2011-ZH PDF)
其它名稱： 568-1056-5
568-3985-5
935269567112
PCA9555D
PCA9555_8
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 08 — 22 October 2009
8 of 34
NXP Semiconductors
PCA9555
16-bit I2C-bus and SMBus I/O port with interrupt
6.2.5 Registers 6 and 7: Conguration registers
This register congures the directions of the I/O pins. If a bit in this register is set (written
with ‘1’), the corresponding port pin is enabled as an input with high-impedance output
driver. If a bit in this register is cleared (written with ‘0’), the corresponding port pin is
enabled as an output. Note that there is a high value resistor tied to VDD at each pin. At
reset, the device's ports are inputs with a pull-up to VDD.
6.3 Power-on reset
When power is applied to VDD, an internal power-on reset holds the PCA9555 in a reset
condition until VDD has reached VPOR. At that point, the reset condition is released and the
PCA9555 registers and SMBus state machine will initialize to their default states. The
power-on reset typically completes the reset and enables the part by the time the power
supply is above VPOR. However, when it is required to reset the part by lowering the power
supply, it is necessary to lower it below 0.2 V.
6.4 I/O port
When an I/O is congured as an input, FETs Q1 and Q2 are off, creating a
high-impedance input with a weak pull-up to VDD. The input voltage may be raised above
VDD to a maximum of 5.5 V.
If the I/O is congured as an output, then either Q1 or Q2 is on, depending on the state of
the Output Port register. Care should be exercised if an external voltage is applied to an
I/O congured as an output because of the low-impedance path that exists between the
pin and either VDD or VSS.
Table 11.
Conguration port 0 register
Bit
7
6
5
4
3
2
1
0
Symbol
C0.7
C0.6
C0.5
C0.4
C0.3
C0.2
C0.1
C0.0
Default
11111111
Table 12.
Conguration port 1 register
Bit
7
6
5
4
3
2
1
0
Symbol
C1.7
C1.6
C1.5
C1.4
C1.3
C1.2
C1.1
C1.0
Default
11111111
相關(guān)PDF資料
PDF描述
PCA9555DB,112 IC I/O EXPANDER I2C 16B 24SSOP
PCA9555PW,112 IC I/O EXPANDER I2C 16B 24TSSOP
5-531478-4 CONT.MINI-LEAF STRIP
5-583857-5 TWIN LEAF DUMMY CONTACT
530505-8 DUO-TYNE FLAG STRIP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9555D112 制造商:NXP Semiconductors 功能描述:IC I/O EXPANDER 16BIT 400KHZ SOIC-24
PCA9555D118 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述:
PCA9555DB 功能描述:接口-I/O擴(kuò)展器 Remote 16-Bit I2C & SMBus 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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9555DB,112 功能描述:接口-I/O擴(kuò)展器 I2C/SMBUS 16BIT GPIO 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
PCA9555DB,118 功能描述:接口-I/O擴(kuò)展器 16-BIT I2C FM TP GPIO INT PU 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
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