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| 型号： | MCP23S17T-E/SS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16 I/O, PIA-GENERAL PURPOSE, PDSO28 |
| 封装： | 5.30 MM, PLASTIC, SSOP-28 |
| 文件页数： | 23/48页 |
| 文件大小： | 915K |
| 代理商： | MCP23S17T-E/SS |
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2007 Microchip Technology Inc.
DS21952B-page 3
MCP23017/MCP23S17
1.0
DEVICE OVERVIEW
The MCP23017/MCP23S17 (MCP23X17) device
family provides 16-bit, general purpose parallel I/O
expansion for I2C bus or SPI applications. The two
devices differ only in the serial interface.
MCP23017 – I2C interface
MCP23S17 – SPI interface
The MCP23X17 consists of multiple 8-bit configuration
registers for input, output and polarity selection. The
system master can enable the I/Os as either inputs or
outputs by writing the I/O configuration bits (IODIRA/B).
The data for each input or output is kept in the
corresponding input or output register. The polarity of
the Input Port register can be inverted with the Polarity
Inversion register. All registers can be read by the
system master.
The 16-bit I/O port functionally consists of two 8-bit
ports (PORTA and PORTB). The MCP23X17 can be
configured to operate in the 8-bit or 16-bit modes via
IOCON.BANK.
There are two interrupt pins, INTA and INTB, that can
be associated with their respective ports, or can be
logically OR’ed together so that both pins will activate if
either port causes an interrupt.
The interrupt output can be configured to activate
under two conditions (mutually exclusive):
1.
When
any
input
state
differs
from
its
corresponding Input Port register state. This is
used to indicate to the system master that an
input state has changed.
2.
When an input state differs from a preconfigured
register value (DEFVAL register).
The Interrupt Capture register captures port values at
the time of the interrupt, thereby saving the condition
that caused the interrupt.
The Power-on Reset (POR) sets the registers to their
default values and initializes the device state machine.
The hardware address pins are used to determine the
device address.
相关PDF资料 |
PDF描述 |
|---|---|
| MCP23017T-E/SO | 16 I/O, PIA-GENERAL PURPOSE, PDSO28 |
| MCP23017-E/ML | 16 I/O, PIA-GENERAL PURPOSE, PQCC28 |
| MCP23S17-E/ML | 16 I/O, PIA-GENERAL PURPOSE, PQCC28 |
| MCP23S18-E/SO | PIA-GENERAL PURPOSE, PDSO28 |
| MCP23S18T-E/SP | PIA-GENERAL PURPOSE, PDIP28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP23S18 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit I/O Expander with Open-Drain Outputs |
| MCP23S18-E/MJ | 功能描述:接口-I/O扩展器 16B I/O Expander SPI interface RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MCP23S18-E/MJ | 制造商:Microchip Technology Inc 功能描述:; Bus Frequency:10MHz; IC Interface Type |
| MCP23S18-E/SO | 功能描述:接口-I/O扩展器 16B I/O Expander SPI interface RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MCP23S18-E/SP | 功能描述:接口-I/O扩展器 16B I/O Expander SPI interface RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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