器件名称: W55F20
功能描述: SERIAL FLASH EEPROM SERIES
文件大小: 75.36KB 共7页
简 介: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 S (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 A (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 Buffer
POR Ci……
