From 3a2185b5e8a6171f85f12dde96d0f0714e3f648d Mon Sep 17 00:00:00 2001 From: luweike Date: Mon, 1 Sep 2025 15:15:42 +0800 Subject: [PATCH] docs: Update external RAM voltage control for ESP32-S2/S3 --- docs/en/api-guides/external-ram.rst | 6 +++++- docs/zh_CN/api-guides/external-ram.rst | 6 +++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/docs/en/api-guides/external-ram.rst b/docs/en/api-guides/external-ram.rst index 83ec3ba614..50684d482f 100644 --- a/docs/en/api-guides/external-ram.rst +++ b/docs/en/api-guides/external-ram.rst @@ -24,10 +24,14 @@ Hardware .. note:: - .. only:: esp32 or esp32s2 or esp32s3 + .. only:: esp32 Some PSRAM chips are 1.8 V devices and some are 3.3 V. The working voltage of the PSRAM chip must match the working voltage of the flash component. Consult the datasheet for your PSRAM chip and {IDF_TARGET_NAME} device to find out the working voltages. For a 1.8 V PSRAM chip, make sure to either set the MTDI pin to a high signal level on boot-up, or program {IDF_TARGET_NAME} eFuses to always use the VDD_SIO level of 1.8 V. Not doing this can damage the PSRAM and/or flash chip. + .. only:: esp32s2 or esp32s3 + + Some PSRAM chips are 1.8 V devices and some are 3.3 V. The working voltage of the PSRAM chip must match the working voltage of the flash component. Consult the datasheet for your PSRAM chip and {IDF_TARGET_NAME} device to find out the working voltages. For a 1.8 V PSRAM chip, make sure to either set the GPIO45 strapping pin to a high signal level on boot-up, or program {IDF_TARGET_NAME} eFuses to always use the VDD_SPI level of 1.8 V. Not doing this can damage the PSRAM and/or flash chip. + .. only:: esp32p4 Some PSRAM chips are 1.8 V devices and some are 3.3 V. Consult the datasheet for your PSRAM chip and {IDF_TARGET_NAME} device to find out the working voltages. diff --git a/docs/zh_CN/api-guides/external-ram.rst b/docs/zh_CN/api-guides/external-ram.rst index d6a5b24f96..7d601d14f5 100644 --- a/docs/zh_CN/api-guides/external-ram.rst +++ b/docs/zh_CN/api-guides/external-ram.rst @@ -24,10 +24,14 @@ .. note:: - .. only:: esp32 or esp32s2 or esp32s3 + .. only:: esp32 PSRAM 芯片的工作电压分为 1.8 V 和 3.3 V。其工作电压必须与 flash 的工作电压匹配。请查询相应 PSRAM 芯片以及 {IDF_TARGET_NAME} 的技术规格书获取准确的工作电压。对于 1.8 V 的 PSRAM 芯片，请确保在启动时将 MTDI 管脚设置为高电平，或者将 {IDF_TARGET_NAME} 中的 eFuses 设置为始终使用 1.8 V 的 VDD_SIO 电平，否则有可能会损坏 PSRAM 和/或 flash 芯片。 + .. only:: esp32s2 or esp32s3 + + PSRAM 芯片的工作电压分为 1.8 V 和 3.3 V。其工作电压必须与 flash 的工作电压匹配。请查询相应 PSRAM 芯片以及 {IDF_TARGET_NAME} 的技术规格书获取准确的工作电压。对于 1.8 V 的 PSRAM 芯片，请确保在启动时将 GPIO45 管脚设置为高电平，或者将 {IDF_TARGET_NAME} 中的 eFuses 设置为始终使用 1.8 V 的 VDD_SPI 电平，否则有可能会损坏 PSRAM 和/或 flash 芯片。 + .. only:: esp32p4 请查询相应 PSRAM 芯片以及 {IDF_TARGET_NAME} 的技术规格书获取准确的工作电压。