# VHDL019: Each file should define only one single architecture ## Summary ```{raw} html

Reliability	Security	Maintainability	Code attribute	Effort to fix	Tags

-	-	LOW	Adaptability \| Modular	10min	synthesis, vscode, linter, simulation, cnes, cnes-std-01100

``` ## Description ```{raw} html

File1.vhd:
architecture a1 of e1 is
begin
end;

architecture a2 of e2 is
begin
end;

File1.vhd:
architecture a1 of e1 is
begin
end;

File2.vhd:
architecture a2 of e2 is
begin
end;

To simplify large project management, review and evolutions, there should not be more that one architecture declaration per file.

``` ## Parameters No parameters. ```{raw} html ```