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Winbond |
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
of a W51300 (voice recorder controller) or the ROM code emulator for the PowerSpeechTM 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 MODE
7 VDD
6 CLK
5 DATA
Publication Release Date: August 1996
- 1 - Revision A2
W55FXX
PIN DESCRIPTION
NO. PIN NAME
1 EOP
2 CTRL
I/O
O
I
3 VSS
I
4 ADDR
I
5 DATA I/O
6 CLK
I
7 VDD
I
8 MODE
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
CTRL
MODE
EOP
shift register
/address counter
Decoder
Write-in Buffer
Control
Circuit
page-code cells
/page-code flag
/comparator
Output
Buffer
POR
Circuit
Core
Array
Pump
Circuit
-2-
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