diff --git a/components/esp_hw_support/port/esp32c3/rtc_sleep.c b/components/esp_hw_support/port/esp32c3/rtc_sleep.c
index a36fd26793..e7eabc7304 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_sleep.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_sleep.c
@@ -6,6 +6,7 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include "esp_attr.h"
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "soc/rtc_cntl_reg.h"
@@ -28,6 +29,8 @@
 #include "soc/systimer_reg.h"
 #endif
 
+static const DRAM_ATTR rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
+
 /**
  * Configure whether certain peripherals are powered down in deep sleep
  * @param cfg power down flags as rtc_sleep_pu_config_t structure
@@ -170,7 +173,6 @@ void rtc_sleep_get_default_config(uint32_t sleep_flags, rtc_sleep_config_t *out_
 void rtc_sleep_init(rtc_sleep_config_t cfg)
 {
     if (cfg.lslp_mem_inf_fpu) {
-        rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
         rtc_sleep_pu(pu_cfg);
     }
     /* mem force pu */
@@ -372,7 +374,6 @@ static uint32_t rtc_sleep_finish(uint32_t lslp_mem_inf_fpu)
 
     /* restore config if it is a light sleep */
     if (lslp_mem_inf_fpu) {
-        rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
         rtc_sleep_pu(pu_cfg);
     }
     return reject;
diff --git a/components/esp_hw_support/port/esp32h2/rtc_sleep.c b/components/esp_hw_support/port/esp32h2/rtc_sleep.c
index 108e12296f..20a6f492f0 100644
--- a/components/esp_hw_support/port/esp32h2/rtc_sleep.c
+++ b/components/esp_hw_support/port/esp32h2/rtc_sleep.c
@@ -6,6 +6,7 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include "esp_attr.h"
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "soc/rtc_cntl_reg.h"
@@ -30,6 +31,8 @@
  */
 static const char *TAG = "rtc_sleep";
 
+static const DRAM_ATTR rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
+
 void rtc_sleep_pu(rtc_sleep_pu_config_t cfg)
 {
     REG_SET_FIELD(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_LSLP_MEM_FORCE_PU, cfg.dig_fpu);
@@ -201,7 +204,6 @@ void rtc_sleep_get_default_config(uint32_t sleep_flags, rtc_sleep_config_t *out_
 void rtc_sleep_init(rtc_sleep_config_t cfg)
 {
     if (cfg.lslp_mem_inf_fpu) {
-        rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
         rtc_sleep_pu(pu_cfg);
     }
     if (cfg.bt_pd_en) {
@@ -382,7 +384,6 @@ static uint32_t rtc_sleep_finish(uint32_t lslp_mem_inf_fpu)
 
     /* restore config if it is a light sleep */
     if (lslp_mem_inf_fpu) {
-        rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
         rtc_sleep_pu(pu_cfg);
     }
     return reject;
diff --git a/components/esp_hw_support/port/esp32s3/rtc_sleep.c b/components/esp_hw_support/port/esp32s3/rtc_sleep.c
index 86dd66ccd9..1a7463d0f8 100644
--- a/components/esp_hw_support/port/esp32s3/rtc_sleep.c
+++ b/components/esp_hw_support/port/esp32s3/rtc_sleep.c
@@ -5,6 +5,7 @@
  */
 
 #include <stdint.h>
+#include "esp_attr.h"
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "soc/rtc_cntl_reg.h"
@@ -22,6 +23,8 @@
 
 #define RTC_CNTL_MEM_FOLW_CPU (RTC_CNTL_SLOWMEM_FOLW_CPU | RTC_CNTL_FASTMEM_FOLW_CPU)
 
+static const DRAM_ATTR rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
+
 /**
  * Configure whether certain peripherals are powered up in sleep
  * @param cfg power down flags as rtc_sleep_pu_config_t structure
@@ -175,7 +178,6 @@ void rtc_sleep_get_default_config(uint32_t sleep_flags, rtc_sleep_config_t *out_
 void rtc_sleep_init(rtc_sleep_config_t cfg)
 {
     if (cfg.lslp_mem_inf_fpu) {
-        rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
         rtc_sleep_pu(pu_cfg);
     }
     /* mem force pu */
@@ -303,7 +305,6 @@ static uint32_t rtc_sleep_finish(uint32_t lslp_mem_inf_fpu)
 
     /* restore config if it is a light sleep */
     if (lslp_mem_inf_fpu) {
-        rtc_sleep_pu_config_t pu_cfg = RTC_SLEEP_PU_CONFIG_ALL(1);
         rtc_sleep_pu(pu_cfg);
     }