docs: fatal errors: mention another reason for LoadStoreError

docs/en/api-guides/fatal-errors.rst

@@ -238,7 +238,11 @@ Application has attempted to read or write memory location, and address alignmen
 LoadStoreError
 ^^^^^^^^^^^^^^
 
-Application has attempted to do a 8- or 16- bit load/store from a memory region which only supports 32-bit loads/stores. For example, dereferencing a ``char*`` pointer which points into intruction memory will result in such an error.
+This exception may happen in the following cases:
+
+- If the application has attempted to do an 8- or 16- bit load/store from a memory region which only supports 32-bit loads/stores. For example, dereferencing a ``char*`` pointer to intruction memory (IRAM, IROM) will result in such an error.
+
+- If the application has attempted a store to a read-only memory region, such as IROM or DROM.
 
 Unhandled debug exception
 ^^^^^^^^^^^^^^^^^^^^^^^^^

docs/zh_CN/api-guides/fatal-errors.rst

@@ -239,7 +239,10 @@ LoadStoreAlignment
 LoadStoreError
 ^^^^^^^^^^^^^^
 
-应用程序尝试从仅支持 32 位加载/存储的内存区域执行 8 位或 16 位加载/存储操作，例如，解引用一个指向指令内存区域的 ``char*`` 指针就会导致这样的错误。
+这类异常通常发生于以下几种场合:
+
+应用程序尝试从仅支持 32 位加载/存储的内存区域执行 8 位或 16 位加载/存储操作，例如，解引用一个指向指令内存区域(比如 IRAM 或者 IROM)的 char* 指针就会触发这个错误。
+应用程序尝试保存数据到只读的内存区域（比如 IROM 或者 DROM）也会触发这个错误。
 
 Unhandled debug exception
 ^^^^^^^^^^^^^^^^^^^^^^^^^