A description is given of formulations comprising solid and stable creatinecitric acid composition and carbohydrate or hydrates thereof having a weight ratio of the constituents creatinecitric acid composition and carbohydrate of 1:0. The source blocks are compacted in the host by copying valid data from the source blocks into one or more destination blocks. The first output circuit is connected to the first boost circuit, and outputs the first voltage as a second voltage in the first operation mode.