diff --git a/timemanager/CCSDSTime.cpp b/timemanager/CCSDSTime.cpp
index c3a28df7..a81f5596 100644
--- a/timemanager/CCSDSTime.cpp
+++ b/timemanager/CCSDSTime.cpp
@@ -1,5 +1,6 @@
 #include <framework/timemanager/CCSDSTime.h>
 #include <stdio.h>
+#include <inttypes.h>
 #include <math.h>
 
 CCSDSTime::CCSDSTime() {
@@ -154,39 +155,33 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
 	if (length < 19) {
 		return RETURN_FAILED;
 	}
-#ifdef AVR_STDIO
-	// In the size optimized nano library used by ATMEL, floating point conversion
-	// is not allowed. There is a linker flag to allow it apparently, but I
-	// could not manage to make it run (removing -specs=nano.specs in linker flags works though,
-	// but we propably should include this). Using floats with sscanf is also expensive.
-	// Furthermore, the stdio.c library by ATMEL can't resolve the %hhi specifiers
-	// Therefore, I adapted this function.
-	int year;
-	int month;
-	int day;
-	int hour;
-	int minute;
-	int second;
-	int usecond;
-	int count = sscanf((char *) from, "%4d-%2d-%2dT%2d:%2d:%2d.%dZ", &year,
-			&month, &day, &hour, &minute, &second, &usecond);
-	if (count == 7) {
+// Newlib can't parse uint8 (there is a configure option but I still need to figure out how to make it work..)
+#ifdef NEWLIB_NO_C99_IO
+	uint16_t year;
+	uint16_t month;
+	uint16_t day;
+	uint16_t hour;
+	uint16_t minute;
+	float second;
+	int count = sscanf((char *) from, "%4" SCNu16 "-%2" SCNu16 "-%2" SCNu16 "T%2" SCNu16 ":%2" SCNu16 ":%fZ", &year,
+				&month, &day, &hour, &minute, &second);
+	if (count == 6) {
 		to->year = year;
 		to->month = month;
 		to->day = day;
 		to->hour = hour;
 		to->minute = minute;
 		to->second = second;
-		to->usecond = usecond;//(second - floor(second)) * 1000000;
+		to->usecond = (second - floor(second)) * 1000000;
 		return RETURN_OK;
 	}
 
 	// try Code B (yyyy-ddd)
-	count = sscanf((char *) from, "%4i-%3iT%2i:%2i:%2i.%iZ", &year, &day,
-			&hour, &minute, &second, &usecond);
-	if (count == 6) {
+	count = sscanf((char *) from, "%4" SCNu16 "-%3" SCNu16 "T%2" SCNu16 ":%2" SCNu16 ":%fZ", &year, &day,
+			&hour, &minute, &second);
+	if (count == 5) {
 		uint8_t tempDay;
-		ReturnValue_t result = CCSDSTime::convertDaysOfYear((uint16_t)day,(uint16_t) year,(uint8_t *) &month,
+		ReturnValue_t result = CCSDSTime::convertDaysOfYear(day, year,(uint8_t *) &month,
 				&tempDay);
 		if (result != RETURN_OK) {
 			return RETURN_FAILED;
@@ -197,7 +192,7 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
 		to->hour = hour;
 		to->minute = minute;
 		to->second = second;
-		to->usecond = usecond;
+		to->usecond = (second - floor(second)) * 1000000;
 		return RETURN_OK;
 	}
 #else
@@ -208,7 +203,7 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
 	uint8_t minute;
 	float second;
 	//try Code A (yyyy-mm-dd)
-	int count = sscanf((char *) from, "%4hi-%2hhi-%2hiT%2hhi:%2hhi:%fZ", &year,
+	int count = sscanf((char *) from, "%4" SCNu16 "-%2" SCNu8 "-%2" SCNu16 "T%2" SCNu8 ":%2" SCNu8 ":%fZ", &year,
 			&month, &day, &hour, &minute, &second);
 	if (count == 6) {
 		to->year = year;