
OpenSpandPico2XL
paulczy/OpenSpand
The OpenSpand is an all-in-one expansion solution for Sinclair ZX81 computers and clones. Functionally very similar to ZXpand+, with more and extended functions.
Microchip TechnologyExtended
-40℃~+125℃ 1.8V~5.5V 25mA 3.4MHz 8 I2C Interrupt Output Reset function、Cascade and address expansion PDIP-18 I/O Expanders ROHS
The MCP23009-E/P is an i, O Expander made by Microchip Technology in a PDIP-18 package with 18 pins. -40℃~+125℃ 1.8V~5.5V 25mA 3.4MHz 8 I2C Interrupt Output Reset function、Cascade and address expansion PDIP-18 I/O Expanders ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:MCP23009-E_SO, from EasyEDA) and its footprint (Package_DIP:DIP-18_W7.62mm, from KiCad's library), ready for a KiCad board. 11 are in stock at JLCPCB (part C646746). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | VDD | Unspecified |
| 2 | NC | Unspecified |
| 3 | SCL | Unspecified |
| 4 | SDA | Unspecified |
| 5 | ADDR | Unspecified |
| 6 | RESET# | Unspecified |
| 7 | INT | Unspecified |
| 8 | GP0 | Unspecified |
| 9 | GP1 | Unspecified |
| 10 | GP2 | Unspecified |
| 11 | GP3 | Unspecified |
| 12 | GP4 | Unspecified |
| 13 | GP5 | Unspecified |
| 14 | GP6 | Unspecified |
| 15 | GP7 | Unspecified |
| 16 | NC | Unspecified |
| 17 | NC | Unspecified |
| 18 | VSS | Unspecified |

paulczy/OpenSpand
The OpenSpand is an all-in-one expansion solution for Sinclair ZX81 computers and clones. Functionally very similar to ZXpand+, with more and extended functions.
Yes. The symbol is EasyEDA_Cloud:MCP23009-E_SO and the footprint Package_DIP:DIP-18_W7.62mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
PDIP-18, with 18 pins. Its footprint is drawn on this page.
Microchip Technology publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C646746, with 11 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the MCP23009-E/SS by Microchip Technology, the MCP23018-E/SO by Microchip Technology, the MCP23018T-E/MJ by Microchip Technology and the MCP23009-E/MG by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.