W27E257 Datasheet, PDF (8/14 Pages) Winbond – 32K X 8 ELECTRICALLY ERASABLE EPROM

TIMING WAVEFORMS
AC Read Waveform
VIH
Address
VIL
VIH
CE
VIL
VIH
OE
VIL
Outputs
High Z
Address Valid
TCE
TOE
TACC
W27E257
TDF
TOH
Valid Output
High Z
Erase Waveform
V_IH
Address
V_IL
Data
14.0V
5.0V
V_PP
V_IH
CE
V_IL
V_IH
OE _VIL
Read
Read
Manufacturer Device
SID
SID
A9 = 12.0V
Chip Erase
A9 = 14.0V
Erase Verify
A0= VIH
Others = VIL
A0 = VIL _{Others = VIL}
Others = VIL
T_ACC
T_ACC
T_AS
T_ARC
DA
02
Data All One
Address
Stable
T_DFP
D_OUT
T_DS
T_AHC
TAH
Address
Stable
D_OUT
T_VPS
T_CE
Blank Check
Read Verify
Address
Stable
T_ACC
DOUT
5V
T_OE
T_OE
T_PWE
T_OES
T_OE
T_OEV
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