LHB阿好伯, 2024/10/22
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模式/(mA) |
ESP32-C3 |
ESP32-C3_3V3 |
RP2040 |
RP2040_去除OLED |
RP2040_3V3 |
運行 |
30.68 |
28.22 |
24.47 |
23.01 |
22.72 |
輕度休眠 |
0.404 |
0.371 |
3.53 |
2.06 |
1.32 |
深度休眠 |
0.155 |
0.136 |
|
|
|
本文針對兩款我常用的微控制器 - ESP32-C3和RP2040
在不同運作模式下的功耗特性進行深入分析
測試使用功耗計進行量測,著重於正常運行、輕度休眠及深度休眠模式的表現。
測試配置
ESP32-C3測試配置:
- 標準配置(使用板載降壓器)_Arduino
- 直接3.3V供電(繞過降壓器)
- 包含輕度休眠和深度休眠模式
RP2040測試配置:
- 標準開發板_micropython
- 移除電源指示OLED後的開發板
- 直接3.3V供電
- 正常運行和輕度休眠模式
測試結果與分析
正常運行模式
ESP32-C3:
標準配置:30.68mA
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直接3.3V:28.22mA
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直接供電效率提升:約8%
RP2040:
標準配置:24.47mA
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移除OLED:23.01mA(降低約6%)
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3.3V直接供電:22.72mA(較標準配置降低約7.2%)
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休眠模式
ESP32-C3:
輕度休眠:
0.404mA(標準)

0.371mA(3.3V)

深度休眠:
0.155mA(標準)

0.136mA(3.3V)

深度休眠相較正常運行節省約99.5%
RP2040:
輕度休眠:
3.53mA(標準)

2.06mA(無OLED)

1.32mA(3.3V)

未測試深度休眠模式
相比運行模式節電效率:約94.2%
結論
運行模式:
RP2040和ESP32-C3的功耗差異不大
RP2040略低約19%,但差距不足以成為選型的決定性因素
休眠模式:
ESP32-C3具有明顯優勢
輕度休眠比RP2040節省72%功耗
深度休眠模式為其獨特優勢
最佳實踐:
需要頻繁休眠的應用選擇ESP32-C3
持續運行的應用可考慮RP2040
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