Microchip MCP23017-E/ML

16I²CPOR1,8 В ~ 5,5 В-40°C ~ 125°C

Overview

The MCP23017/MCP23S17 (MCP23X17) devicefamily provides 16-bit, general purpose parallel I/Oexpansion for I2C bus or SPI applications. The twodevices differ only in the serial interface:• MCP23017-E/ML – I2C interface• MCP23S17 – SPI interfaceThe MCP23X17 consists of multiple 8-bit configurationregisters for input, output and polarity selection. Thesystem master can enable the I/Os as either inputs oroutputs by writing the I/O configuration bits (IODIRA/B).The data for each input or output is kept in thecorresponding input or output register. The polarity ofthe Input Port register can be inverted with the PolarityInversion register. All registers can be read by thesystem master.

The Interrupt Capture register captures port values atthe time of the interrupt, thereby saving the conditionthat caused the interrupt.The Power-on Reset (POR) sets the registers to theirdefault values and initializes the device state machine.The hardware address pins are used to determine thedevice address.

Features

Applications

• Wireless Telemetry
• JTRS
• 802.11x Receivers
• IDEN
• PHS
• TD-SCDMA
• CDMA2000
• WCDMA
• UMTS
• Antialiasing Filter