W27C512 Datasheet, PDF (8/15 Pages) Winbond – 64K X 8 ELECTRICALLY ERASABLE EPROM

TIMING WAVEFORMS
AC Read Waveform
V IH
Address
VIL
V IH
CE _VIL
V IH
OE/Vpp
VIL
Outputs
High Z
Address Valid
TCE
TACC
TOE
W27C512
TDF
TOH
Valid Output
High Z
Erase Waveform
Address
V IH
V IL
Data
Vcc
OE/Vpp
CE
5V
14.0V
V IH
V IL
V IH
VIL
Read
Company
SID
Read
Device
SID
A9 = 12.0V
Chip Erase
A9 = 14.0V
Erase Verify
Others = VIL
A0 = VI
L
TACC
A0 = VIH
Others = VIL
TACC
Others = VIL
TAS
TAHC
Address Valid
TACV _{=250 nS}
Address Valid
T ACV =250 nS
DA
08
Data All One
D _OUT
D _OUT
TDS
TDH
TVCS
3.75V
TOE
TCE
TOE
TOES
TPRT
TVS
V IH
TOEH
TOEV = 150 nS
Always = VIL
Blank Check
Read Verify
Address Valid
T ACC
D _OUT
V IH
T OE
TPWE
TVR
Address Valid
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