diff --git a/src/stlink-common.h b/src/stlink-common.h
index cb6c6cc..9481609 100644
--- a/src/stlink-common.h
+++ b/src/stlink-common.h
@@ -175,6 +175,7 @@ extern "C" {
         /* sram settings */
 #define STM32_SRAM_BASE 0x20000000
 #define STM32_SRAM_SIZE (8 * 1024)
+#define STM32L_SRAM_SIZE (16 * 1024)
         stm32_addr_t sram_base;
         size_t sram_size;
 
diff --git a/src/stlink-usb.c b/src/stlink-usb.c
index 6eb456c..2ed5320 100644
--- a/src/stlink-usb.c
+++ b/src/stlink-usb.c
@@ -702,6 +702,20 @@ on_libusb_error:
 
     sl->backend = &_stlink_usb_backend;
     sl->backend_data = slu;
+
+    /* flash memory settings */
+    sl->flash_base = STM32_FLASH_BASE;
+    sl->flash_size = STM32_FLASH_SIZE;
+    sl->flash_pgsz = STM32_FLASH_PGSZ;
+
+    /* system memory */
+    sl->sys_base = STM32_SYSTEM_BASE;
+    sl->sys_size = STM32_SYSTEM_SIZE;
+
+    /* sram memory settings */
+    sl->sram_base = STM32_SRAM_BASE;
+    sl->sram_size = STM32L_SRAM_SIZE;
+
     /* success */
     return sl;