MCP23008-E/ML Microchip

MCP23008/MCP23S08 8-Bit I/O Expander with Serial Interface Configurable interrupt source Features - Interrupt-on-change from configured defaults 8-bit remote bidirectional I/O port or pin change - I/O pins default to input Polarity Inversion register to configure the polarity 2 C interface (MCP23008) High-speed I of the input port data - 100 kHz External reset input - 400 kHz Low standby current: 1 A (max.) -1.7MHz Operating voltage: High-speed SPI interface (MCP23S08) - 1.8V to 5.5V -40C to +85C 2 -10MHz C 100 kHz I SPI 5 MHz Hardware address pins - 2.7V to 5.5V -40C to +85C - Three for the MCP23008 to allow up to eight 2 I C 400 kHz devices on the bus SPI 10 MHz - Two for the MCP23S08 to allow up to four - 4.5V to 5.5V -40C to +125C devices using the same chip-select 2 I C 1.7 kHz Configurable interrupt output pin SPI 10 MHz - Configurable as active-high, active-low or open-drain Packages 18-pin PDIP (300 mil) 18-pin SOIC (300 mil) 20-pin SSOP 20-pin QFN Block Diagram MCP23S08 SCK SI SO MCP23008 GP0 SCL Serializer/ Serial 8 Deserializer GP1 SDA Interface GP2 MCP23S08 GP3 3 A1:A0 A2:A0 Decode GPIO GP4 Control GP5 RESET GP6 Interrupt GP7 INT Logic 8 VDD POR Configuration/ Control VSS Registers 2007 Microchip Technology Inc. DS21919E-page 1MCP23008/MCP23S08 Package Types MCP23008 PDIP/SOIC SSOP 1 20 SCL VDD 1 18 VDD SCL 2 19 SDA GP7 GP7 2 17 SDA 3 18 A2 GP6 3 16 GP6 A2 4 17 GP5 A1 4 15 GP5 A1 5 16 A0 GP4 5 14 GP4 A0 6 15 GP3 RESET 6 13 GP3 RESET 7 14 NC GP2 7 12 GP2 NC 13 INT 8 GP1 8 11 GP1 INT 12 9 VSS GP0 9 10 GP0 VSS 10 11 N/C N/C QFN 1 15 A2 GP6 A1 2 14 GP5 MCP23008 3 13 A0 GP4 4 12 RESET GP3 5 11 NC GP2 DS21919E-page 2 2007 Microchip Technology Inc. MCP23008 6 N/C 20 SDA INT 7 SCL 19 N/C 8 VDD 18 GP0 9 VSS 17 10 GP1 GP7 16 MCP23008