diff --git a/database b/database
index 13da8683..6572fdee 160000
--- a/database
+++ b/database
@@ -1 +1 @@
-Subproject commit 13da86838ba39f882a81a9fabe030b4c653854c9
+Subproject commit 6572fdeeadd23a45d71188b2acda9ff6552e1bbf
diff --git a/devices.json b/devices.json
index 68df05f7..48915484 100644
--- a/devices.json
+++ b/devices.json
@@ -139,6 +139,18 @@
                 "col_bias" : 1,
                 "fuzz": 1
             },
+            "LCMXO2-640HC": {
+                "packages": ["QFN32"],
+                "idcode": "0x012b9043",
+                "frames": 209,
+                "bits_per_frame": 888,
+                "pad_bits_after_frame": 0,
+                "pad_bits_before_frame": 0,
+                "max_row" : 8,
+                "max_col" : 17,
+                "col_bias" : 1,
+                "fuzz": 1
+            },
             "LCMXO2-1200HC": {
                 "packages": ["QFN32"],
                 "idcode": "0x012ba043",
diff --git a/libtrellis/src/Tile.cpp b/libtrellis/src/Tile.cpp
index e832e704..60caf809 100644
--- a/libtrellis/src/Tile.cpp
+++ b/libtrellis/src/Tile.cpp
@@ -27,6 +27,8 @@ static const regex tile_r_re(R"([A-Za-z0-9_]*R(\d+))");
 map<pair<int, int>, pair<int, int>> center_map = {
     // 256HC
     {make_pair(7, 9), make_pair(3, 4)},
+    // 640HC
+    {make_pair(8, 17), make_pair(3, 7)},
     // 1200HC
     {make_pair(12, 21), make_pair(6, 12)}
 };