diff --git a/ld/devices.data b/ld/devices.data
index a27ef62b..38bd3134 100644
--- a/ld/devices.data
+++ b/ld/devices.data
@@ -421,7 +421,7 @@ stm32f4 END ROM_OFF=0x08000000 RAM_OFF=0x20000000 CPU=cortex-m4 FPU=hard-fpv4-sp
 stm32f7 END ROM_OFF=0x08000000 RAM_OFF=0x20010000 CPU=cortex-m7 FPU=hard-fpv5-sp-d16
 stm32l0 END ROM_OFF=0x08000000 RAM_OFF=0x20000000 CPU=cortex-m0plus FPU=soft
 stm32l1 END ROM_OFF=0x08000000 RAM_OFF=0x20000000 CPU=cortex-m3 FPU=soft
-stm32l4 END ROM_OFF=0x08000000 RAM_OFF=0x20000000 RAM2_OFF=0x10000000 CPU=cortex-m4 FPU=hard-fpv4-sp-d16
+stm32l4 END ROM_OFF=0x08000000 RAM_OFF=0x20000000 RAM2_OFF=0x10000000 RAM3_OFF=0x20040000 CPU=cortex-m4 FPU=hard-fpv4-sp-d16
 stm32w END ROM_OFF=0x08000000 RAM_OFF=0x20000000 CPU=cortex-m3 FPU=soft
 stm32t END ROM_OFF=0x08000000 RAM_OFF=0x20000000 CPU=cortex-m3 FPU=soft
 
diff --git a/ld/linker.ld.S b/ld/linker.ld.S
index 51cdacd5..908ad9ea 100644
--- a/ld/linker.ld.S
+++ b/ld/linker.ld.S
@@ -47,6 +47,9 @@ MEMORY
 #if defined(_RAM2)
 	ram2 (rwx) : ORIGIN = _RAM2_OFF, LENGTH = _RAM2
 #endif
+#if defined(_RAM3)
+	ram3 (rwx) : ORIGIN = _RAM3_OFF, LENGTH = _RAM3
+#endif
 #if defined(_CCM)
 	ccm (rwx) : ORIGIN = _CCM_OFF, LENGTH = _CCM
 #endif
@@ -151,6 +154,13 @@ SECTIONS
 	} >ram2
 #endif
 
+#if defined(_RAM3)
+	.ram3 : {
+		*(.ram3*)
+		. = ALIGN(4);
+	} >ram3
+#endif
+
 #if defined(_XSRAM)
 	.xsram : {
 		*(.xsram*)