W49L201 Datasheet, PDF (20/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

Preliminary W49L201
Timing Waveforms, continued
Sector Erase Timing Diagram
Address A16-0
DQ15-0
CE
5555
Six-word code for 3.3V-only software
Sector Erase
2AAA
5555
5555
2AAA SA
XXAA XX55
XX80 XXAA XX55
XX30
OE
TWP
TEC
WE
TWPH
SW0
SW1
SW2
SW3
SW4
SW5 ^{Internal Erase starts}
*Note: It is not allowed to assert read operation(CE# &OE# are both active) during the
command sequence. If read command is asserted during the command
sequence, then the device will return to read mode(abort write).
SA = Sector Address
Reset Timing Diagram
CE
OE
RESET
TRH
TRP
- 20 -