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參數(shù)資料
| 型號： | PCA8575 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Remote 16-bit I/O expander for I2C-bus with interrupt |
| 中文描述： | 遠程16位I / O擴展I2C總線的中斷 |
| 文件頁數(shù)： | 6/30頁 |
| 文件大?。?/td> | 168K |
| 代理商： | PCA8575 |
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PCA8575_1
NXP B.V. 2006. All rights reserved.
Objective data sheet
Rev. 01 — 30 November 2006
6 of 30
NXP Semiconductors
PCA8575
Remote 16-bit I/O expander for I
2
C-bus with interrupt
7.
Functional description
Refer to
Figure 1 “Block diagram of PCA8575”
.
7.1 Device address
Following a START condition, the bus master must send the address of the slave it is
accessing and the operation it wants to perform (read or write). The address of the
PCA8575 is shown in
Figure 9
. Slave address pins AD2, AD1, and AD0 choose 1 of
8 slave addresses. To conserve power, no internal pull-up resistors are incorporated on
AD2, AD1, and AD0. Address values depending on AD2, AD1, and AD0 can be found in
Table 3 “PCA8575 address map”
.
Remark:
The General Call address (0000 0000b) and the Device ID address
(1111 100Xb) are reserved and cannot be used as device address. Failure to follow this
requirement will cause the PCA8575 not to acknowledge.
The last bit of the first byte defines the operation to be performed. When set to logic 1 a
read is selected, while a logic 0 selects a write operation.
When AD2, AD1 and AD0 are held to V
DD
or V
SS
, the same address as the PCF8575 is
applied.
7.1.1
Address map
Fig 9.
PCA8575 address
R/W
002aab636
A6
A5
A4
A3
A2
A1
A0
programmable
slave address
Table 3.
A6
0
0
0
0
0
0
0
0
PCA8575 address map
A5
A4
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
A3
0
0
0
0
0
0
0
0
A2
0
0
0
0
1
1
1
1
A1
0
0
1
1
0
0
1
1
A0
0
1
0
1
0
1
0
1
Address (hex)
20h
21h
22h
23h
24h
25h
26h
27h
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA8575BQ | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Remote 16-bit I/O expander for I2C-bus with interrupt |
| PCA8575BQ,118 | 功能描述:接口-I/O擴展器 16-BIT I2C FM QB 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 |
| PCA8575BQ-T | 功能描述:接口-I/O擴展器 16-BIT I2C FM QB 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 |
| PCA8575BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Remote 16-bit I/O expander for I2C-bus with interrupt |
| PCA8575BS,118 | 功能描述:接口-I/O擴展器 16-BIT I2C FM QB 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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