W27E020 Datasheet, PDF (8/14 Pages) Winbond – 256K X 8 ELECTRICALLY ERASABLE EPROM

Preliminary W27E020
TIMING WAVEFORMS
AC Read Waveform
VIH
Address
V_IL
V_IH
CE
V_IL
V_IH
OE
V_IL
Outputs
High Z
Address Valid
TCE
T_OE
TACC
T_DF
T_OH
Valid Output
High Z
Erase Waveform
V_IH
Address
VIL
Data
14.0V
5.0V
VPP
VIH
CE
VIL
VIH
OE
VIL
PGM
Read
Read
Manufacturer Device
SID
SID
A9 = 12.0V
Chip Erase
A9 = 14.0V
Erase Verify
Others = V IL
A0 = V _IL
A0=VIH
Others=V IL
TAS
TAS
Others = V _IL
TAS
TAHC
DA
01
Data All One
Address
Stable
TDFP
DOUT
Address
Stable
DOUT
TDS
TDH
T _AH
TVPS
TCE
Blank Check
Read Verify
Address
Stable
TACC
DOUT
5V
TOE
TOE
TOES
TOE
TCES
TPWE
TOEV
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