Designed to match the Raspberry Pi 40-pin connector layout, this adapter is compatible with Raspberry Pi Zero, Zero W, Zero WH, 2B, 3B, 3B+, and 4B models. It features the SC16IS752 chip solution, enabling the expansion of two serial ports and 8 GPIOs simultaneously. The I2C address settings and interrupt pin selection are facilitated by a DIP switch, providing convenience for users during setup.
Product Features
- Onboard SC16IS752, can expand 2 serial ports and 8 programmable IO through I2C, does not occupy extra pins
- By changing the address of DIP switch, up to 16 modules can be connected at the same time, that is, 32 serial ports can be expanded；
- Multiple onboard indicators, easy to check the working status of the extended serial port；
- Reserve I2C control interface for accessing to other main control boards easily.
Product Parameters
| Supply Voltage | 3.3V or 5V |
| Logic Voltage | 3.3V |
| Expansion Chip | SC16IS752 |
| Interface Protocol | I2C |
| Size | 65mm(length) x 30.5mm(width) |
Interface Introduction
The Serial Expansion Module leads out all the I2C address lines, and can set the addresses of A0 and A1 through the DIP switch. In addition, there are 6 interrupt pins, which can stack up to 16 Serial Expansion Modules. The demo codes we provide is to set the address to 0x48, setting the interrupt pin to P5 (BCM).
- 1. I2C control lead out interface
- 2. Board power indicator
- 3. Serial port A data receiving and transmitting indicator
- 4. I2C Address A0 setting
- 5. Serial port A connector
- 6. Interrupt pin selection
- 7. I2C Address A1 setting
- 8. Serial port B connector
- 9. Serial port B data receiving and transmitting indicator
- 10. GPIO connector
- 11. Raspberry Pi 40P female connector
WIKI
Package Contents
- SG-SE-E752 Module x 1
- Accessory pack
2 