S29GL256N80TFI010 more detail:
http://www.chinaicmart.com/series-S29/S29GL256N80TFI010.htmlPerformance Characteristics High performance— 80 ns access time (S29GL128N, S29GL256N), 90 ns access time (S29GL512N)
— 8-word/16-byte page read buffer
— 25 ns page read times
— 16-word/32-byte write buffer reduces overall programming time for multiple-word updates
Low power consumption (typical values at 3.0 V, 5 MHz)— 25 mA typical active read current;
— 50 mA typical erase/program current
— 1 µA typical standby mode current
Package options— 56-pin TSOP
— 64-ball Fortified BGA
Software & Hardware Features Software features— Program Suspend & Resume: read other sectors before programming operation is completed
— Erase Suspend & Resume: read/program other sectors before an erase operation is completed
— Data# polling & toggle bits provide status
— Unlock Bypass Program command reduces overall multiple-word or byte programming time
— CFI (Common Flash Interface) compliant: allows host system to identify and accommodate multiple flash devices
Hardware features— Advanced Sector Protection
— WP#/ACC input accelerates programming time (when high voltage is applied) for greater throughput during system production. Protects first or last sector regardless of sector protection settings
— Hardware reset input (RESET#) resets device
— Ready/Busy# output (RY/BY#) detects program or erase cycle completion
