diff --git a/src/mcp2515_can.cpp b/src/mcp2515_can.cpp
index 6ef5b9d..93b9a3d 100644
--- a/src/mcp2515_can.cpp
+++ b/src/mcp2515_can.cpp
@@ -515,6 +515,12 @@ byte mcp2515_can::mcp2515_configRate(const byte canSpeed, const byte clock) {
                     cfg3 = MCP_16MHz_666kBPS_CFG3;
                     break;
 
+                case (CAN_800KBPS) :
+                    cfg1 = MCP_16MHz_800kBPS_CFG1;
+                    cfg2 = MCP_16MHz_800kBPS_CFG2;
+                    cfg3 = MCP_16MHz_800kBPS_CFG3;
+                    break;
+
                 case (CAN_1000KBPS):
                     cfg1 = MCP_16MHz_1000kBPS_CFG1;
                     cfg2 = MCP_16MHz_1000kBPS_CFG2;
@@ -601,6 +607,12 @@ byte mcp2515_can::mcp2515_configRate(const byte canSpeed, const byte clock) {
                     cfg3 = MCP_8MHz_500kBPS_CFG3;
                     break;
 
+                case (CAN_800KBPS) :
+                    cfg1 = MCP_8MHz_800kBPS_CFG1;
+                    cfg2 = MCP_8MHz_800kBPS_CFG2;
+                    cfg3 = MCP_8MHz_800kBPS_CFG3;
+                    break;
+
                 case (CAN_1000KBPS) :
                     cfg1 = MCP_8MHz_1000kBPS_CFG1;
                     cfg2 = MCP_8MHz_1000kBPS_CFG2;
diff --git a/src/mcp2515_can_dfs.h b/src/mcp2515_can_dfs.h
index 2f02890..025a44f 100644
--- a/src/mcp2515_can_dfs.h
+++ b/src/mcp2515_can_dfs.h
@@ -277,6 +277,14 @@
 #define MCP_16MHz_1000kBPS_CFG2 (0xD0)
 #define MCP_16MHz_1000kBPS_CFG3 (0x82)
 
+#define MCP_16MHz_800kBPS_CFG1 (0x40)
+#define MCP_16MHz_800kBPS_CFG2 (0x92)
+#define MCP_16MHz_800kBPS_CFG3 (0x02)
+
+#define MCP_16MHz_666kBPS_CFG1 (0x00)
+#define MCP_16MHz_666kBPS_CFG2 (0xA0)
+#define MCP_16MHz_666kBPS_CFG3 (0x04)
+
 #define MCP_16MHz_500kBPS_CFG1 (0x00)
 #define MCP_16MHz_500kBPS_CFG2 (0xF0)
 #define MCP_16MHz_500kBPS_CFG3 (0x86)
@@ -341,9 +349,6 @@
 #define MCP_16MHz_5kBPS_CFG2 (0xFF)
 #define MCP_16MHz_5kBPS_CFG3 (0x87)
 
-#define MCP_16MHz_666kBPS_CFG1 (0x00)
-#define MCP_16MHz_666kBPS_CFG2 (0xA0)
-#define MCP_16MHz_666kBPS_CFG3 (0x04)
 
 
 // speed 8M
@@ -352,6 +357,10 @@
 #define MCP_8MHz_1000kBPS_CFG2 (0x80)
 #define MCP_8MHz_1000kBPS_CFG3 (0x00)
 
+#define MCP_8MHz_800kBPS_CFG1 (0x00)
+#define MCP_8MHz_800kBPS_CFG2 (0x80)
+#define MCP_8MHz_800kBPS_CFG3 (0x01)
+
 #define MCP_8MHz_500kBPS_CFG1 (0x00)
 #define MCP_8MHz_500kBPS_CFG2 (0x90)
 #define MCP_8MHz_500kBPS_CFG3 (0x02)
diff --git a/src/mcp2518fd_can.cpp b/src/mcp2518fd_can.cpp
index dd3f602..5dda94a 100644
--- a/src/mcp2518fd_can.cpp
+++ b/src/mcp2518fd_can.cpp
@@ -1822,6 +1822,7 @@ uint32_t mcp2518fd::bittime_compat_to_mcp2518fd(uint32_t speedset) {
   default:
   case CAN_500KBPS: r = CANFD::BITRATE( 500000UL, 0); break;
   case CAN_666KBPS: r = CANFD::BITRATE( 666000UL, 0); break;
+  case CAN_800KBPS: r = CANFD::BITRATE( 800000UL, 0); break;
   case CAN_1000KBPS:r = CANFD::BITRATE(1000000UL, 0); break;
   }
   return r;
diff --git a/src/mcp_can.h b/src/mcp_can.h
index bdca025..33fc7d5 100644
--- a/src/mcp_can.h
+++ b/src/mcp_can.h
@@ -46,6 +46,7 @@ typedef enum {
     CAN_250KBPS ,
     CAN_500KBPS ,
     CAN_666KBPS ,
+    CAN_800KBPS ,
     CAN_1000KBPS
 } MCP_BITTIME_SETUP;