diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index 5216c69d0f..dda2cbd02c 100644
--- a/locale/circuitpython.pot
+++ b/locale/circuitpython.pot
@@ -193,6 +193,7 @@ msgstr ""
 
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 #: ports/cxd56/common-hal/pulseio/PulseIn.c
+#: ports/espressif/common-hal/coproc/Coproc.c
 #: ports/nrf/common-hal/pulseio/PulseIn.c
 #: ports/raspberrypi/common-hal/rp2pio/StateMachine.c
 #: ports/stm/common-hal/pulseio/PulseIn.c py/argcheck.c
@@ -485,6 +486,7 @@ msgstr ""
 msgid "Already have all-matches listener"
 msgstr ""
 
+#: ports/espressif/common-hal/coproc/__init__.c
 #: shared-module/memorymonitor/AllocationAlarm.c
 #: shared-module/memorymonitor/AllocationSize.c
 msgid "Already running"
@@ -1015,7 +1017,7 @@ msgstr ""
 msgid "Firmware is invalid"
 msgstr ""
 
-#: ports/espressif/common-hal/coproc/__init__.c
+#: ports/espressif/common-hal/coproc/Coproc.c
 #: ports/espressif/common-hal/dualbank/__init__.c
 msgid "Firmware is too big"
 msgstr ""
diff --git a/ports/espressif/common-hal/alarm/coproc/CoprocAlarm.c b/ports/espressif/common-hal/alarm/coproc/CoprocAlarm.c
index 3e0cff1c4c..aa49e13a2a 100644
--- a/ports/espressif/common-hal/alarm/coproc/CoprocAlarm.c
+++ b/ports/espressif/common-hal/alarm/coproc/CoprocAlarm.c
@@ -27,9 +27,16 @@
 #include "shared-bindings/alarm/coproc/CoprocAlarm.h"
 #include "shared-bindings/coproc/__init__.h"
 
+#if CIRCUITPY_COPROC
+
+#include "supervisor/port.h"
+
+#include "driver/rtc_cntl.h"
+#include "soc/rtc_cntl_reg.h"
+
 #include "esp_sleep.h"
 
-#if CIRCUITPY_COPROC
+static volatile bool woke_up = false;
 
 mp_obj_t alarm_coproc_coprocalarm_find_triggered_alarm(const size_t n_alarms, const mp_obj_t *alarms) {
     for (size_t i = 0; i < n_alarms; i++) {
@@ -47,6 +54,13 @@ mp_obj_t alarm_coproc_coprocalarm_create_wakeup_alarm(void) {
     return alarm;
 }
 
+// This is used to wake the main CircuitPython task.
+STATIC void coproc_interrupt(void *arg) {
+    (void)arg;
+    woke_up = true;
+    port_wake_main_task_from_isr();
+}
+
 void alarm_coproc_coprocalarm_set_alarm(const bool deep_sleep, const size_t n_alarms, const mp_obj_t *alarms) {
     bool coproc_alarm_set = false;
     alarm_coproc_coprocalarm_obj_t *coproc_alarm = MP_OBJ_NULL;
@@ -65,13 +79,18 @@ void alarm_coproc_coprocalarm_set_alarm(const bool deep_sleep, const size_t n_al
         return;
     }
 
-    // load coproc program
-    common_hal_coproc_load(coproc_alarm->coproc);
+    // enable coproc interrupt
+    rtc_isr_register(&coproc_interrupt, NULL, RTC_CNTL_COCPU_INT_ST);
+    REG_SET_BIT(RTC_CNTL_INT_ENA_REG, RTC_CNTL_COCPU_INT_ENA);
+
+    // start coproc program
+    common_hal_coproc_run(coproc_alarm->coproc);
 }
 
 void alarm_coproc_coprocalarm_prepare_for_deep_sleep(void) {
-    // start coproc program
-    common_hal_coproc_run(NULL);
+    // disbale coproc interrupt
+    rtc_isr_deregister(&coproc_interrupt, NULL);
+    REG_CLR_BIT(RTC_CNTL_INT_ENA_REG, RTC_CNTL_COCPU_INT_ENA);
 
     // enable coproc wakeup
     esp_sleep_enable_ulp_wakeup();
@@ -79,10 +98,11 @@ void alarm_coproc_coprocalarm_prepare_for_deep_sleep(void) {
 }
 
 bool alarm_coproc_coprocalarm_woke_this_cycle(void) {
-    return false;
+    return woke_up;
 }
 
 void alarm_coproc_coprocalarm_reset(void) {
+    woke_up = false;
 }
 
 #else // CIRCUITPY_COPROC
diff --git a/ports/espressif/common-hal/coproc/Coproc.c b/ports/espressif/common-hal/coproc/Coproc.c
index 1216b5dde3..c2115c1e94 100644
--- a/ports/espressif/common-hal/coproc/Coproc.c
+++ b/ports/espressif/common-hal/coproc/Coproc.c
@@ -27,12 +27,33 @@
 #include "shared-bindings/coproc/Coproc.h"
 #include "shared-bindings/coproc/CoprocMemory.h"
 
+#include "py/runtime.h"
+
+#if defined(CONFIG_IDF_TARGET_ESP32S2)
+#include "esp32s2/ulp.h"
+#define ULP_COPROC_RESERVE_MEM (CONFIG_ESP32S2_ULP_COPROC_RESERVE_MEM)
+#elif defined(CONFIG_IDF_TARGET_ESP32S3)
+#include "esp32s3/ulp.h"
+#define ULP_COPROC_RESERVE_MEM (CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM)
+#endif
+
+#define RTC_SLOW_MEM_END ((uint32_t)RTC_SLOW_MEM + ULP_COPROC_RESERVE_MEM)
+
 void common_hal_coproc_coproc_construct(coproc_coproc_obj_t *self,
     const uint8_t *buf, const size_t buf_len, coproc_memory_obj_t *coproc_memory) {
     // set CoprocMemory object
+    if (coproc_memory != NULL) {
+        if (coproc_memory->address < ((uint32_t)RTC_SLOW_MEM + buf_len) ||
+            coproc_memory->address > (RTC_SLOW_MEM_END - coproc_memory->len)) {
+            mp_raise_ValueError_varg(translate("%q out of range"), MP_QSTR_CoprocMemory);
+        }
+    }
     self->coproc_memory = coproc_memory;
 
     // load buffer
+    if (buf_len > ULP_COPROC_RESERVE_MEM) {
+        mp_raise_RuntimeError(translate("Firmware is too big"));
+    }
     self->buf_len = buf_len;
     self->buf = (uint8_t *)m_malloc(self->buf_len, false);
     memcpy(self->buf, buf, self->buf_len);
diff --git a/ports/espressif/common-hal/coproc/__init__.c b/ports/espressif/common-hal/coproc/__init__.c
index 9fce6afcdf..e372bfa235 100644
--- a/ports/espressif/common-hal/coproc/__init__.c
+++ b/ports/espressif/common-hal/coproc/__init__.c
@@ -40,6 +40,14 @@
 #include "soc/rtc_cntl_reg.h"
 
 void common_hal_coproc_run(coproc_coproc_obj_t *self) {
+    if (GET_PERI_REG_MASK(RTC_CNTL_ULP_CP_TIMER_REG, RTC_CNTL_ULP_CP_SLP_TIMER_EN)) {
+        mp_raise_RuntimeError(translate("Already running"));
+    }
+
+    ulp_riscv_load_binary(self->buf, self->buf_len);
+    m_free(self->buf);
+    self->buf = (uint8_t *)RTC_SLOW_MEM;
+
     ulp_riscv_run();
 }
 
@@ -55,18 +63,10 @@ void common_hal_coproc_halt(coproc_coproc_obj_t *self) {
     CLEAR_PERI_REG_MASK(RTC_CNTL_ULP_CP_TIMER_REG, RTC_CNTL_ULP_CP_SLP_TIMER_EN);
     // suspends the ulp operation
     SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_DONE);
-    // Resets the processor
+    // resets the processor
     SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_SHUT_RESET_EN);
 }
 
-void common_hal_coproc_load(coproc_coproc_obj_t *self) {
-    if (ulp_riscv_load_binary(self->buf, self->buf_len) != ESP_OK) {
-        mp_raise_RuntimeError(translate("Firmware is too big"));
-    }
-    m_free(self->buf);
-    self->buf = (uint8_t *)RTC_SLOW_MEM;
-}
-
 mp_obj_t common_hal_coproc_memory(coproc_coproc_obj_t *self) {
     return (self->coproc_memory) ? MP_OBJ_FROM_PTR(self->coproc_memory) : mp_const_none;
 }
diff --git a/ports/espressif/esp-idf-config/sdkconfig-esp32s2.defaults b/ports/espressif/esp-idf-config/sdkconfig-esp32s2.defaults
index d96a6c5366..bfd64ef90e 100644
--- a/ports/espressif/esp-idf-config/sdkconfig-esp32s2.defaults
+++ b/ports/espressif/esp-idf-config/sdkconfig-esp32s2.defaults
@@ -42,7 +42,7 @@ CONFIG_ESP32S2_DATA_CACHE_LINE_32B=y
 # CONFIG_ESP32S2_TRAX is not set
 CONFIG_ESP32S2_TRACEMEM_RESERVE_DRAM=0x0
 CONFIG_ESP32S2_ULP_COPROC_ENABLED=y
-CONFIG_ESP32S2_ULP_COPROC_RESERVE_MEM=4096
+CONFIG_ESP32S2_ULP_COPROC_RESERVE_MEM=8176
 CONFIG_ESP32S2_ULP_COPROC_RISCV=y
 CONFIG_ESP32S2_DEBUG_OCDAWARE=y
 # CONFIG_ESP32S2_DEBUG_STUBS_ENABLE is not set
diff --git a/ports/espressif/esp-idf-config/sdkconfig-esp32s3.defaults b/ports/espressif/esp-idf-config/sdkconfig-esp32s3.defaults
index 30a71c6a44..f6fb80c752 100644
--- a/ports/espressif/esp-idf-config/sdkconfig-esp32s3.defaults
+++ b/ports/espressif/esp-idf-config/sdkconfig-esp32s3.defaults
@@ -68,7 +68,7 @@ CONFIG_ESP32S3_DATA_CACHE_LINE_SIZE=32
 # CONFIG_ESP32S3_TRAX is not set
 CONFIG_ESP32S3_TRACEMEM_RESERVE_DRAM=0x0
 CONFIG_ESP32S3_ULP_COPROC_ENABLED=y
-CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM=4096
+CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM=8176
 CONFIG_ESP32S3_ULP_COPROC_RISCV=y
 CONFIG_ESP32S3_BROWNOUT_DET=y
 CONFIG_ESP32S3_BROWNOUT_DET_LVL_SEL_7=y
diff --git a/shared-bindings/coproc/__init__.c b/shared-bindings/coproc/__init__.c
index 1709e9b203..06b196d8be 100644
--- a/shared-bindings/coproc/__init__.c
+++ b/shared-bindings/coproc/__init__.c
@@ -68,9 +68,7 @@ STATIC coproc_coproc_obj_t *get_coproc_obj(mp_obj_t *self_in) {
 //|     ...
 //|
 STATIC mp_obj_t coproc_run(mp_obj_t self_in) {
-    coproc_coproc_obj_t *self = get_coproc_obj(&self_in);
-    common_hal_coproc_load(self);
-    common_hal_coproc_run(self);
+    common_hal_coproc_run(get_coproc_obj(&self_in));
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(coproc_run_obj, coproc_run);
diff --git a/shared-bindings/coproc/__init__.h b/shared-bindings/coproc/__init__.h
index 0609bf827b..6f2b2a56ae 100644
--- a/shared-bindings/coproc/__init__.h
+++ b/shared-bindings/coproc/__init__.h
@@ -32,7 +32,6 @@
 
 extern void common_hal_coproc_run(coproc_coproc_obj_t *self);
 extern void common_hal_coproc_halt(coproc_coproc_obj_t *self);
-extern void common_hal_coproc_load(coproc_coproc_obj_t *self);
 extern mp_obj_t common_hal_coproc_memory(coproc_coproc_obj_t *self);
 
 #endif  // MICROPY_INCLUDED_SHARED_BINDINGS_COPROC___INIT___H