Transcription of 8-Bit I/O Expander with Serial Interface Data Sheet
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8-Bit I/O Expander with Serial Interface Data Sheet
2007 Microchip Technology 1 MCP23008/ mcp23s08 Features 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 )-10 MHz 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 QFNB lock DiagramGP0GP1GP2GP3GP4GP5GP6GP7 SerialControlGPIOSCLSDARESETINT8 Configuration/8A2:A03 ControlRegistersSerializer/DeserializerI nterruptLogic VDDVSSPORD ecode Interface SCKSISOMCP23S08 MCP23008A1:A0 MCP23S088-Bit I/O Expander with Serial InterfaceM
MCP23008/MCP23S08 DS21919E-page 6 © 2007 Microchip Technology Inc. 1.2 Power-on Reset (POR) The on-chip POR circuit holds the device in reset until
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