diff --git a/ports/stm32/adc.c b/ports/stm32/adc.c
index e9be702132..a5163537e0 100644
--- a/ports/stm32/adc.c
+++ b/ports/stm32/adc.c
@@ -134,7 +134,9 @@
     defined(STM32F407xx) || defined(STM32F417xx) || \
     defined(STM32F401xC) || defined(STM32F401xE)
 #define VBAT_DIV (2)
-#elif defined(STM32F411xE) || defined(STM32F412Zx) || \
+#elif defined(STM32F411xE) || \
+    defined(STM32F412Cx) || defined(STM32F412Rx) || \
+    defined(STM32F412Vx) || defined(STM32F412Zx) || \
     defined(STM32F413xx) || defined(STM32F427xx) || \
     defined(STM32F429xx) || defined(STM32F437xx) || \
     defined(STM32F439xx) || defined(STM32F446xx) || \
diff --git a/ports/stm32/boards/plli2svalues.py b/ports/stm32/boards/plli2svalues.py
index e5ea4e8dfd..f872c60ebb 100644
--- a/ports/stm32/boards/plli2svalues.py
+++ b/ports/stm32/boards/plli2svalues.py
@@ -24,6 +24,9 @@ mcu_support_plli2s = [
     "stm32f401xe",
     "stm32f407xx",
     "stm32f411xe",
+    "stm32f412cx",
+    "stm32f412rx",
+    "stm32f412vx",
     "stm32f412zx",
     "stm32f413xx",
     "stm32f427xx",
@@ -163,7 +166,7 @@ def main():
 
     if mcu_series in mcu_support_plli2s:
         if len(argv) not in (1, 2):
-            print("usage: pllvalues.py [-c] [-m <mcu_series>] <hse in MHz> <pllm in MHz>")
+            print("usage: plli2svalues.py [-c] [-m <mcu_series>] <hse in MHz> <pllm in MHz>")
             sys.exit(1)
 
         if argv[0].startswith("hse:"):
diff --git a/ports/stm32/timer.c b/ports/stm32/timer.c
index aa41092829..5308061732 100644
--- a/ports/stm32/timer.c
+++ b/ports/stm32/timer.c
@@ -889,7 +889,7 @@ static const uint32_t tim_instance_table[MICROPY_HW_MAX_TIMER] = {
     #endif
 
     #if defined(TIM6)
-    #if defined(STM32F412Zx) || defined(STM32L1)
+    #if defined(STM32F412Cx) || defined(STM32F412Rx) || defined(STM32F412Vx) || defined(STM32F412Zx) || defined(STM32L1)
     TIM_ENTRY(6, TIM6_IRQn),
     #elif defined(STM32G0)
     TIM_ENTRY(6, TIM6_DAC_LPTIM1_IRQn),