MCP23018-E/SP Microchip

MCP23018/MCP23S18 16-Bit I/O Expander with Open-Drain Outputs Configurable interrupt source: Features - Interrupt-on-change from configured defaults 16-bit remote bidirectional I/O port: or pin change - I/O pins default to input Polarity inversion register to configure the polarity Open-drain outputs: of the input port data -5.5V tolerant External reset input - 25 mA sink capable (per pin) Low standby current: - 400 mA total A +85C) - 1 A (-40C T 2 High-speed I C interface: (MCP23018) - 6 A (+85C TA +125C) - 100 kHz Operating voltage: - 400 kHz - 1.8V to 5.5V -3.4MHz High-speed SPI interface: (MCP23S18) Packages DD 5.5V - 10 MHz: 2.7V V 28-pin PDIP (300 mil) Single hardware address pin: (MCP23018) 28-pin SOIC (300 mil) - Voltage input to allow up to eight devices on 24-pin SSOP (MCP23018 only) the bus Configurable interrupt output pins: 24-pin QFN (4x4 mm ) - Configurable as active-high, active-low or open-drain Block Diagram MCP23S18 CS SCK SI SPI SO Open-drain MCP23018 GPB7 Serializer/ SCL 2 GPB6 I C Deserializer SDA GPB5 GPIO GPB4 GPB3 Multi-bit ADDR GPB2 Decode GPB1 Control 16 GPB0 RESET INTA Interrupt GPA7 INTB Logic GPA6 8 GPA5 GPA4 GPIO GPA3 GPA2 Configuration/ Control GPA1 Registers GPA0 2008 Microchip Technology Inc. DS22103A-page 1GPA4 19 GPA5 20 GPA6 21 GPA7 22 VSS 23 GPB0 24 MCP23018/MCP23S18 Package Types: MCP23018 PDIP/SOIC SSOP VSS 1 28 NC VSS 1 24 GPA7 NC 2 27 GPA7 GPB0 2 23 GPA6 GPB0 3 26 GPA6 GPB1 3 22 GPA5 GPB1 4 25 GPA5 GPB2 4 21 GPA4 GPB2 5 24 GPA4 GPB3 5 20 GPA3 GPB3 6 23 GPA3 GPB4 6 19 GPA2 GPB4 7 22 GPA2 GPB5 7 18 GPA1 GPB5 8 21 GPA1 GPB6 8 17 GPA0 GPB6 9 20 GPA0 GPB7 9 16 INTA VDD 10 15 INTB GPB7 10 19 INTA VDD 11 18 INTB SCL 11 14 RESET SCL 12 17 NC SDA 12 13 ADDR SDA 13 16 RESET NC 14 15 ADDR QFN GPB1 1 18 GPA3 GPB2 2 17 GPA2 EP GPB3 3 16 GPA1 25 GPB4 4 15 GPA0 GPB5 5 14 INTA GPB6 6 13 INTB DS22103A-page 2 2008 Microchip Technology Inc. GPB7 7 VDD 8 SCL 9 SDA 10 ADDR 11 12 RESET