W55FXX Datasheet, PDF (2/7 Pages) Winbond – SERIAL FLASH EEPROM SERIES

W55FXX
PIN DESCRIPTION
NO. PIN NAME I/O
1
EOP
O
2
CTRL
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-