Verification board for I/O expander MCP23S08T-E/SS chip

• This project is used to verify the solution verification board design of the Lichuang Mall interface-I/O expander MCP23S08T-E/SS

• This project is  a sample project for the Solicitation Order for Lichuang EDA open source hardware platform  solution verification module .

• • -

Input voltage 3v-5.5v; hardware address selected by two 0Ω resistors

1. 8-bit remote bidirectional I/O port
2. - I/O pins default to inputs
3. High-Speed ​​I2C™ Interface (MCP23008)
4. 100 kHz
5. 400 kHz
6. 1.7 MHz
7. •High-speed SPI interface (MCP23S08)
8. - 10 MHz
9. •Hardware address pin
10. -Three for the MCP23008 allowing up to eight
11. Devices on the bus
12. -Two MCP23S08 allows up to four
13. Devices using the same chip selection
14. Configurable interrupt output pin
15. -Configurable for activity high, activity low or
16. Configurable interrupt source
17. -Change interrupts or pin changes from configured default settings
18. Polarity inversion register, configures the polarity input port data
19. External reset input
20. Low standby current: 1µA (max).