EMBEDDED SYSTEMS
STM32H7 RS-232 Ethernet Router
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CASE ANALYSIS
Scenario
Design a compact STM32H7-based device that routes two RS-232 serial links to Ethernet, suitable for industrial serial-to-Ethernet conversion.
Key decisions
- Use RMII for Ethernet PHY to reduce pins
- Employ MAX232 for RS-232 level shifting
- Onboard voltage regulation from 5V to 3.3V
When to reuse this
Industrial IoT gateways, serial device servers, and embedded networking appliances.
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circuit-compact-stm32h7-rs-232-ethernet-router-with-dual-uart-signal