SCL Reference: Types

SCL allows the definition of types which can then be subsequently used to define variables . There are several kinds of type definitions.


Enumeration type definitions give specific values that the type allows:

type color is (red, blue, green);


Range definitions give a range of values that the type allows:

type Byte is range 0 to #16#FF#;

Range definitions can include an option definition of the units associated with the type:

type voltage is range -9223372036854775807 to 9223372036854775807
   units mV;
      V  = 1000 mV;
      kV = 1000 V;
   end units;


Below is an example of an array type:

type bit_vector is array (integer range <>) of bit;
© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.