diff --git a/README.md b/README.md
index 96893630..eee31102 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ ESP-IDF and Arduino examples and ready-to-flash example firmware.
 | Feature | Device / interface |
 | --- | --- |
 | MCU | ESP32-S3-WROOM-1-N16R8, 2.4 GHz Wi-Fi and Bluetooth 5 LE |
+| Memory | 16 MB Flash, 8 MB PSRAM |
 | Display | 4.2-inch 300 x 400 reflective LCD, ST7305 controller |
 | Audio | ES8311 codec; ES7210 ADC with a dual-microphone array |
 | RTC | PCF85063 |
diff --git a/README_ZH.md b/README_ZH.md
index c1a9b5ff..ee543aa9 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -27,6 +27,7 @@ ESP32-S3-RLCD-4.2 是一块 AIoT 开发板，采用 ESP32-S3-WROOM-1-N16R8 模
 | 功能 | 器件或接口 |
 | --- | --- |
 | MCU | ESP32-S3-WROOM-1-N16R8，2.4 GHz Wi-Fi 和蓝牙 5 LE |
+| 存储器 | 16 MB Flash，8 MB PSRAM |
 | 显示 | 4.2 英寸 300 × 400 反射式 LCD，ST7305 控制器 |
 | 音频 | ES8311 音频编解码器；ES7210 ADC 双麦克风阵列 |
 | RTC | PCF85063 |