There are currently four variants for the SAMA5D2 SiP. The SAMA5D225C-D1M provides 128 Mb of DDR2 in an 11 x 11 mm 0.75 mm pitch BGA196 package. This device is typically used for RTOS or bare metal C code designs. The SAMA5D27C-D5M or D1G provide 512 Mb and 1 Gb of DDR2 respectively, which is typically enough to run a Linux-based system. This device is packaged in a 14 x 14 mm 0.8 mm pitch BGA289 package. The SAMA5D28C-D1G also provides 1 Gb of DDR2 in a 14 x 14 mm 0.8 mm pitch BGA289 package; it also provides Payment Card level security.