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參數(shù)資料
| 型號： | PCA8575PW,118 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 6/30頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TSSOP |
| 特色產品： | NXP - I2C Interface |
| 標準包裝： | 1 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 16 |
| 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： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 24-TSSOP |
| 包裝： | 標準包裝 |
| 包括： | POR |
| 其它名稱： | 568-8248-6 |
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PCA8575_2
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 02 — 21 March 2007
14 of 30
NXP Semiconductors
PCA8575
Remote 16-bit I/O expander for I2C-bus with interrupt
10. Application design-in information
10.1 Bidirectional I/O expander applications
In the 8-bit I/O expander application shown in Figure 19, P00 and P01 are inputs, and P02
to P07 are outputs. When used in this conguration, during a write, the input (P00 and
P01) must be written as HIGH so the external devices fully control the input ports. The
desired HIGH or LOW logic levels may be written to the I/Os used as outputs (P02 to
P07). During a read, the logic levels of the external devices driving the input ports (P00
and P01) and the previous written logic level to the output ports (P02 to P07) will be read.
The GPIO also has an interrupt line (INT) that can be connected to the interrupt logic of
the microprocessor. By sending an interrupt signal on this line, the remote I/O informs the
microprocessor that there is incoming data or a change of data on its ports without having
to communicate via the I2C-bus.
10.2 High current-drive load applications
The GPIO has a maximum sinking current of 25 mA per bit. In applications requiring
additional drive, two port pins in the same octal may be connected together to sink up to
50 mA current. Both bits must then always be turned on or off together. Up to 8 pins (one
octal) can be connected together to drive 200 mA.
Fig 19. Bidirectional I/O expander application
002aab812
VDD
temperature sensor
battery status
control for latch
control for switch
control for audio
control for camera
control for MP3
P00
P01
P02
P03
P04
P05
P06
P07
VDD
SDA
SCL
INT
AD0
AD1
AD2
CORE
PROCESSOR
VDD
Fig 20. High current-drive load application
002aab813
VDD
P00
P01
P02
P03
P04
P05
P06
P07
VDD
SDA
SCL
INT
AD0
AD1
AD2
CORE
PROCESSOR
VDD
LOAD
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCA8576C | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates |
| PCA8576CH/Q900,157 | 功能描述:LCD 驅動器 UNIVERSAL LCD DRIVER LOW MULTIPLEX RATES RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| PCA8576CH/Q900/1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates |
| PCA8576CH/Q900/1,1 | 功能描述:LCD 驅動器 MULT DIG/SEG 200KHz RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| PCA8576CH/Q900/1,118 | 制造商:NXP Semiconductors 功能描述:Cut Tape 制造商:NXP Semiconductors 功能描述:0 |
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