MCP23018

MCP23018/MCP23S18 16-Bit I/O Expander with Open-Drain Outputs Features 16-bit remote bidirectional I/O port: - I/O pins default to input Open-drain outputs: - 5.5V tolerant - 25 mA sink capable (per pin) - 400 mA total High-speed I2C™ interface: (MCP23018) - 100 kHz - 400 kHz - 3.4 MHz High-speed SPI interface: (MCP23S18) - 10 MHz: 2.7V ≤ VDD ≤ 5.5V Single hardware address pin: (MCP23018) - Voltage input to allow up to eight devices on the bus Configurable interrupt output pins: - Configurable as active-high, active-low or open-drain Configurable interrupt source: - Interrupt-on-change from configured defaults or pin change Polarity inversion register to configure the polarity of the input port data External reset input Low standby current: - 1 µA (-40°C ≤ TA ≤ +85°C) - 6 µA (+85°C ≤ TA ≤ +125°C) Operating voltage: - 1.8V to 5.5V Packages 28-pin PDIP (300 mil) 28-pin SOIC (300 mil) 24-pin SSOP (MCP23018 only) 24-pin QFN (4x4 [mm]) Block Diagram MCP23S18 CS SCK SI SO SPI MCP23018 SCL SDA I2C Serializer/ Deserializer GPIO ADDR RESET INTA INTB Multi-bit Decode Open-drain GPB7 GPB6 GPB5 GPB4 GPB3 GPB2 GPB1 GPB0 GPA7 GPA6 GPA5 GPA4 GPA3 GPA2 GPA1 GPA0 Control 16 Interrupt Logic 8 GPIO Configuration/ Control Registers www.DataSheet4U.com © 2008 Microchip Technology Inc. DS22103A-page 1 MCP23018/MCP23S18 Package Types: MCP23018 PDIP/SOIC VSS NC GPB0 GPB1 GPB2 GPB3 GPB4 GPB5 GPB6 GPB7 VDD SCL SDA NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 2...