W55F20

W55FXX SERIAL FLASH EEPROM SERIES GENERAL DESCRIPTION The W55FXX is a serial input/output flash EEPROM series that is typically used as the memory cell TM of a W51300 (voice recorder controller) or the ROM code emulator for the PowerSpeech series. The single voltage supply eliminates the need for an extra pump circuit during programming and erasing. FEATURES Provides CLK, ADDR, and DATA pins to operate with Winbond PowerSpeechTM series 512K/1M/2M memory sizes available Directly cascadable for longer duration Fast frame-write operation − Frame (32 bits) program cycle time: 400 µS (typ.) Fast whole-chip-erase duration: 50 mS (max.) Read data access time: 500 nS (max.) Program/erase cycles: 10,000 (typ.) Data retention: 10 years (typ.) Low power consumption: − Operating: 5 mA (typ.) − Standby: 2 µA (typ.) PIN CONFIGURATION EOP CTRL VSS ADDR 1 2 3 4 8 7 6 5 MODE VDD CLK DATA -1- Publication Release Date: August 1996 Revision A2 W55FXX PIN DESCRIPTION NO. 1 2 3 4 5 6 7 8 PIN NAME EOP CTRL VSS ADDR DATA CLK VDD MODE I/O O I I I I/O I I I DESCRIPTION End of process signal output Enable signal for program and erase operations when MODE = 0 Input clock for mode counter when MODE = 1 Ground Input clock for start adress shift-in Bidirectional data line Input clock for data write-in and read-out Positive voltage supply Mode select control pin BLOCK DIAGRAM CLK DATA ADDR shift register /address counter page-code cells /page-code flag /comparator Output B...