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| 型號(hào)： | MCP23017-E/SP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16 I/O, PIA-GENERAL PURPOSE, PDIP28 |
| 封裝： | 0.300 INCH, SKINNY, PLASITC, DIP-28 |
| 文件頁(yè)數(shù)： | 47/48頁(yè) |
| 文件大?。?/td> | 915K |
| 代理商： | MCP23017-E/SP |
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MCP23017/MCP23S17
DS21952B-page 8
2007 Microchip Technology Inc.
1.4
Hardware Address Decoder
The hardware address pins are used to determine the
device address. To address a device, the correspond-
ing address bits in the control byte must match the pin
state. The pins must be biased externally.
1.4.1
ADDRESSING I2C DEVICES
(MCP23017)
The MCP23017 is a slave I2C interface device that
supports 7-bit slave addressing, with the read/write bit
filling out the control byte. The slave address contains
four fixed bits and three user-defined hardware
address bits (pins A2, A1 and A0). Figure 1-2 shows
the control byte format.
1.4.2
ADDRESSING SPI DEVICES
(MCP23S17)
The MCP23S17 is a slave SPI device. The slave
address contains four fixed bits and three user-defined
hardware address bits (if enabled via IOCON.HAEN)
(pins A2, A1 and A0) with the read/write bit filling out
the control byte. Figure 1-3 shows the control byte
format. The address pins should be externally biased
even if disabled (IOCON.HAEN = 0).
FIGURE 1-2:
I2C CONTROL BYTE
FORMAT
FIGURE 1-3:
SPI CONTROL BYTE
FORMAT
FIGURE 1-4:
I2C ADDRESSING REGISTERS
FIGURE 1-5:
SPI ADDRESSING REGISTERS
S
0
1
0
A2A1A0 R/W ACK
Start
bit
Slave Address
R/W bit
ACK bit
Control Byte
R/W = 0 = write
R/W = 1 = read
0
1
0
A2 A1 A0 R/W
Slave Address
R/W bit
Control Byte
R/W = 0 = write
R/W = 1 = read
CS
S0
1
0
A2 A1 A0
0
ACK*
A7
A6
A5
A4
A3
A2
A1
A0
ACK*
Device Opcode
Register Address
R/W = 0
*The ACKs are provided by the MCP23017.
0
100
A2
*
A1
*
A0
*
R/W
A7
A6A5A4A3A2A1A0
Device Opcode
Register Address
CS
* Address pins are enabled/disabled via IOCON.HAEN.
相關(guān)PDF資料 |
PDF描述 |
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| MCP23S17-E/SS | 16 I/O, PIA-GENERAL PURPOSE, PDSO28 |
| MCP23S17T-E/ML | 16 I/O, PIA-GENERAL PURPOSE, PQCC28 |
| MCP23017-E/SO | 16 I/O, PIA-GENERAL PURPOSE, PDSO28 |
| MCP23S17T-E/SS | 16 I/O, PIA-GENERAL PURPOSE, PDSO28 |
| MCP23017T-E/SO | 16 I/O, PIA-GENERAL PURPOSE, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP23017T-E/ML | 功能描述:接口-I/O擴(kuò)展器 16bit Input/Output Exp I2C interface 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 |
| MCP23017T-E/SO | 功能描述:接口-I/O擴(kuò)展器 16bit Input/Output Exp I2C interface 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 |
| MCP23017T-E/SP | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16-Bit I/O Expander with Serial Interface |
| MCP23017T-E/SS | 功能描述:接口-I/O擴(kuò)展器 16bit Input/Output Exp I2C interface 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 |
| MCP23018 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16-Bit I/O Expander with Open-Drain Outputs |
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