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| 型号： | MCP23S18-E/MJ |
| 厂商： | Microchip Technology |
| 文件页数： | 34/56页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER SPI 16B 24QFN |
| 标准包装： | 91 |
| 接口： | SPI |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 10MHz |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 托盘 |
| 产品目录页面： | 684 (CN2011-ZH PDF) |
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MCP23018/MCP23S18
DS22103A-page 4
2008 Microchip Technology Inc.
1.0
DEVICE OVERVIEW
The MCP23X18 device provides 16-bit, general pur-
pose parallel I/O expansion for I2C bus or SPI
applications. The two devices differ only in the serial
interface.
MCP23018 - I2C interface
MCP23S18 - SPI interface
The MCP23X18 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. 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 (2) 8-bit
ports (PORTA and PORTB). The MCP23X18 can be
configured to operate in 8-bit mode or 16-bit mode via
IOCON.BANK.
There are two interrupt pins, INTA and INTB which can
be associated with their respective ports, or can be
logically OR’ed together so 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 pre-
configured 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 pin is used to determine the
device address.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP23S18T | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit I/O Expander with Open-Drain Outputs |
| MCP23S18T-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 |
| MCP23S18T-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 |
| MCP23S18T-E/SP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit I/O Expander with Open-Drain Outputs |
| MCP23S18T-E/SS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit I/O Expander with Open-Drain Outputs |
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