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參數(shù)資料
| 型號： | PCA9674ABS |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | I2C/I2S |
| 英文描述： | Remote 8-bit I-O expander for Fm+ I2C-bus with interrupt |
| 封裝： | PCA9674ABS<SOT758-1 (HVQFN16)|<<http://www.nxp.com/packages/SOT758-1.html<1<Always Pb-free,;PCA9674AD<SOT162-1 (SO16)|<<http://www.nxp.com/packages/SOT162-1.html<1< |
| 文件頁數(shù)： | 12/32頁 |
| 文件大?。?/td> | 299K |
| 代理商： | PCA9674ABS |
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PCA9674_PCA9674A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 6 — 29 September 2011
12 of 32
NXP Semiconductors
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I
2
C-bus with interrupt
7.2.2
Device ID (PCA9674; PCA9674A ID field)
The Device ID field is a 3-byte read-only (24 bits) word giving the following information:
8 bits with the manufacturer name, unique per manufacturer (for example, NXP).
13 bits with the part identification, assigned by manufacturer, the 7 MSBs with the
category ID and the 6 LSBs with the feature ID (for example, for example PCA9674;
PCA9674A 16-bit quasi-output I/O expander).
3 bits with the die revision, assigned by manufacturer (for example, Rev X).
The Device ID is read-only, hardwired in the device and can be accessed as follows:
1. START command
2. The master sends the Reserved Device ID I
2
C-bus address ‘1111 100’ with the R/W
bit set to 0 (write).
3. The master sends the I
2
C-bus slave address of the slave device it needs to identify.
The LSB is a ‘Don’t care’ value. Only one device must acknowledge this byte (the one
that has the I
2
C-bus slave address).
4. The master sends a Re-START command.
Remark:
A STOP command followed by a START command will reset the slave state
machine and the Device ID read cannot be performed.
Remark:
A STOP command or a Re-START command followed by an access to
another slave device will reset the slave state machine and the Device ID read cannot
be performed.
5. The master sends the Reserved Device ID I
2
C-bus address ‘1111 100’ with the R/W
bit set to 1 (read).
6. The device ID read can be done, starting with the 8 manufacturer bits (first byte +
4 MSB of the second byte), followed by the 13 part identification bits and then the
3 die revision bits (3 LSB of the third byte).
7. The master ends the reading sequence by NACKing the last byte, thus resetting the
slave device state machine and allowing the master to send the STOP command.
Remark:
The reading of the Device ID can be stopped anytime by sending a NACK
command.
Remark:
If the master continues to ACK the bytes after the third byte, the PCA9674;
PCA9674A rolls back to the first byte and keeps sending the Device ID sequence until
a NACK has been detected.
For the PCA9674; PCA9674A, the Device ID is as shown in
Figure 10
.
Fig 10. PCA9674; PCA9674A ID
0
002aac118
0
0
revision
1
0
1
0
0
1
0
1
0
part identification
0
0
0
0
0
0
0
0
0
0
0
0
manufacturer
category identification
feature identification
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9674ABS,118 | 功能描述:接口-I/O擴(kuò)展器 8-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 |
| PCA9674ABS,118-CUT TAPE | 制造商:NXP 功能描述:PCA9674 Series 1 MHz 8 bit I/O Expander Fm + I2C Bus with Interrupt - HVQFN-16 |
| PCA9674ABS-T | 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM+ QB GPIO RST 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 |
| PCA9674AD | 功能描述:接口-I/O擴(kuò)展器 8-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 |
| PCA9674AD,512 | 功能描述:接口-I/O擴(kuò)展器 8-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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