diff --git a/components/esp_hw_support/sleep_modes.c b/components/esp_hw_support/sleep_modes.c
index 62a8a43bf1..90fd80d0af 100644
--- a/components/esp_hw_support/sleep_modes.c
+++ b/components/esp_hw_support/sleep_modes.c
@@ -256,7 +256,8 @@ static bool s_light_sleep_wakeup = false;
 static portMUX_TYPE spinlock_rtc_deep_sleep = portMUX_INITIALIZER_UNLOCKED;
 
 static const char *TAG = "sleep";
-static RTC_FAST_ATTR bool s_adc_tsen_enabled = false;
+/* APP core of esp32 can't access to RTC FAST MEMORY, do not define it with RTC_FAST_ATTR */
+static RTC_SLOW_ATTR bool s_adc_tsen_enabled = false;
 //in this mode, 2uA is saved, but RTC memory can't use at high temperature, and RTCIO can't be used as INPUT.
 static bool s_ultra_low_enabled = false;
 
@@ -357,12 +358,12 @@ esp_deep_sleep_wake_stub_fn_t esp_get_deep_sleep_wake_stub(void)
 }
 
 #if CONFIG_IDF_TARGET_ESP32
-/* APP core of esp32 can't access to RTC FAST MEMORY, do not define it with RTC_IRAM_ATTR */
-void
+/* APP core of esp32 can't access to RTC FAST MEMORY, link to RTC SLOW MEMORY instead*/
+RTC_SLOW_ATTR
 #else
-void RTC_IRAM_ATTR
+RTC_IRAM_ATTR
 #endif
-esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
+void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
 {
 #if SOC_PM_SUPPORT_DEEPSLEEP_CHECK_STUB_ONLY
     wake_stub_fn_handler = new_stub;
@@ -371,7 +372,14 @@ esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
 #endif
 }
 
-void RTC_IRAM_ATTR esp_default_wake_deep_sleep(void)
+
+#if CONFIG_IDF_TARGET_ESP32
+/* APP core of esp32 can't access to RTC FAST MEMORY, link to RTC SLOW MEMORY instead*/
+RTC_SLOW_ATTR
+#else
+RTC_IRAM_ATTR
+#endif
+void esp_default_wake_deep_sleep(void)
 {
     /* Clear MMU for CPU 0 */
 #if CONFIG_IDF_TARGET_ESP32
@@ -2208,11 +2216,11 @@ static uint32_t get_power_down_flags(void)
 
 #if CONFIG_IDF_TARGET_ESP32
 /* APP core of esp32 can't access to RTC FAST MEMORY, do not define it with RTC_IRAM_ATTR */
-void
+RTC_SLOW_ATTR
 #else
-void RTC_IRAM_ATTR
+RTC_IRAM_ATTR
 #endif
-esp_deep_sleep_disable_rom_logging(void)
+void esp_deep_sleep_disable_rom_logging(void)
 {
     rtc_suppress_rom_log();
 }
diff --git a/examples/system/deep_sleep/main/deep_sleep_example_main.c b/examples/system/deep_sleep/main/deep_sleep_example_main.c
index d46a5c1ac2..ae3579956b 100644
--- a/examples/system/deep_sleep/main/deep_sleep_example_main.c
+++ b/examples/system/deep_sleep/main/deep_sleep_example_main.c
@@ -18,11 +18,7 @@
 #include "nvs.h"
 #include "deep_sleep_example.h"
 
-#if SOC_RTC_FAST_MEM_SUPPORTED
-static RTC_DATA_ATTR struct timeval sleep_enter_time;
-#else
-static struct timeval sleep_enter_time;
-#endif
+RTC_SLOW_ATTR static struct timeval sleep_enter_time;
 
 static void deep_sleep_task(void *args)
 {