Datasheet > 微控制器和处理器 > 并行 IO 端口> MCP23S18T-E/SP

MCP23S18T-E/SP

更新时间： 2024-02-15 23:52:28

品牌	Logo	应用领域
美国微芯 - MICROCHIP		并行IO端口微控制器和处理器外围集成电路光电二极管
页数	文件大小	规格书
56页	736K
描述
16-Bit I/O Expander with Open-Drain Outputs

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MCP23S18T-E/SP 技术参数

生命周期：	Active	零件包装代码：	DIP
包装说明：	0.300 INCH, LEAD FREE, PLASTIC, SDIP-28	针数：	28
Reach Compliance Code：	compliant	风险等级：	5.75
Is Samacsys：	N	JESD-30 代码：	R-PDIP-T28
长度：	34.671 mm	I/O 线路数量：	16
端口数量：	2	端子数量：	28
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	座面最大高度：	5.08 mm
最大供电电压：	5.5 V	最小供电电压：	1.8 V
标称供电电压：	5 V	表面贴装：	NO
技术：	CMOS	温度等级：	AUTOMOTIVE
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	宽度：	7.62 mm
uPs/uCs/外围集成电路类型：	PARALLEL IO PORT, GENERAL PURPOSE	Base Number Matches：	1

MCP23S18T-E/SP 数据手册

MCP23018/MCP23S18

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.

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.

The interrupt output can be configured to activate

under two conditions (mutually exclusive):

• MCP23018 - I²C interface

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.

• 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

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 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.

The hardware address pin is used to determine the

device address.

DS22103A-page 4

1 2 345 6 7...56

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