8-Bit I/O Expander with Serial Interface Data Sheet

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2007 Microchip Technology 1MCP23008/MCP23S08Features 8-Bit remote bidirectional I/O port- I/O pins default to input High-speed I2C Interface (MCP23008)- 100 kHz- 400 High-speed SPI Interface (MCP23S08)-10MHz Hardware address pins- Three for the MCP23008 to allow up to eight devices on the bus- Two for the MCP23S08 to allow up to four devices using the same chip-select Configurable interrupt output pin- 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 A (max.) Operating voltage:- to @ -40 C to +85 CI2C @ 100 kHzSPI @ 5 MHz- to @ -40 C to +85 CI2C @ 400 kHzSPI @ 10 MHz- to @ -40 C to +125 CI2C @ kHzSPI @ 10 MHzPackages 18-pin PDIP (300 mil) 18-pin SOIC (300 mil) 20-pin SSOP 20-pin QFNBlock DiagramGP0GP1GP2GP3GP4GP5GP6GP7SerialCon trolGPIOSCLSDARESETINT8Configuration/8A2 :A03ControlRegistersSerializer/Deseriali zerInterruptLogic VDDVSSPORDecode Interface SCKSISOMCP23S08MCP23008A1:A0MCP23S088-Bi t I/O Expander with Serial InterfaceMCP23008/MCP23S08DS21919E-page 2 2007 Microchip Technology TypesSDAS

Can be confi gured for active-high, active-low or open-drain. VSS 9179 PGround. GP0 10 9 12 I/O Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak pull-up resistor. GP1 11 10 13 I/O Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak pull-up resistor. GP2 12 11 14 I/O Bidirectional ...

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