256MBit MOBILE SDR SDRAMs based on 4M x 4Bank x16 .
HY5S5B6ELFP-HE - 256MBit MOBILE SDR SDRAMs based on 4M x 4Bank x16 I/O
HY5S5B6ELFP-SE - 256MBit MOBILE SDR SDRAMs based on 4M x 4Bank x16 I/O