diff --git a/boards/avsextrem/Makefile.features b/boards/avsextrem/Makefile.features
index d88a55619b1cbf4e68235d6180e0503187f0b8e2..a73d270b881cfb9e07978a0d7aec3f591f3fb796 100644
--- a/boards/avsextrem/Makefile.features
+++ b/boards/avsextrem/Makefile.features
@@ -1,4 +1,5 @@
 FEATURES_PROVIDED += periph_gpio
 FEATURES_PROVIDED += periph_rtc
 FEATURES_PROVIDED += periph_spi
+FEATURES_PROVIDED += periph_timer
 FEATURES_MCU_GROUP = arm7
diff --git a/boards/avsextrem/include/board.h b/boards/avsextrem/include/board.h
index 579f83824f7eda660aa4935d709a5e7c888c362c..3f74a5c9db308d50c4f973d0765ab81a7faeb2cd 100644
--- a/boards/avsextrem/include/board.h
+++ b/boards/avsextrem/include/board.h
@@ -56,6 +56,11 @@ extern "C" {
 #define STDIO_RX_BUFSIZE    (64U)
 /** @} */
 
+/**
+ * @brief Deprecated HW_TIMER definition (to be removed)
+ */
+#define HW_TIMER             TIMER_DEV(0)
+
 /**
  * @brief Initialize the board's clock system
  */
diff --git a/boards/avsextrem/include/periph_conf.h b/boards/avsextrem/include/periph_conf.h
index 72e7c89a9f2d9fe7448718b79cbe7f2d7d80db1f..2dc1dc76a9ad5a931ab43d3deef814741b2a15e2 100644
--- a/boards/avsextrem/include/periph_conf.h
+++ b/boards/avsextrem/include/periph_conf.h
@@ -25,6 +25,22 @@
 extern "C" {
 #endif
 
+/**
+ * @brief   Clock configuration
+ * @{
+ */
+#define CLOCK_CORECLOCK     (72000000U)         /* this board runs with 72MHz */
+
+#define CLOCK_PCLK          (CLOCK_CORECLOCK)
+/** @} */
+
+/**
+ * @brief   Timer configuration, select a number from 1 to 4
+ * @{
+ */
+#define TIMER_NUMOF         (1U)
+/** @} */
+
 /**
  * @brief PWM device and pinout configuration
  */