W27C020 Datasheet, PDF (6/14 Pages) Winbond – 256K X 8 ELECTRICALLY ERASABLE EPROM

Preliminary W27C020
READ OPERATION DC CHARACTERISTICS
(Vcc = 5.0V ±5%)
PARAMETER
SYM.
CONDITIONS
Input Load Current
ILI
VIN = 0V to VCC
Output Leakage Current ILO
VOUT = 0V to VCC
Standby VCC Current
(TTL input)
ISB
CE = VIH
Standby VCC Current
(CMOS input)
ISB1 _{CE = VCC ±0.2V}
VCC Operating Current
ICC
CE = VIL
IOUT = 0 mA
f = 5 MHz
VPP Operating Current
IPP
VPP = VCC
Input Low Voltage
VIL
-
Input High Voltage
VIH
-
Output Low Voltage
VOL IOL = 2.1 mA
Output High Voltage
VOH IOH = -0.4 mA
VPP Operating Voltage VPP
-
MIN.
-5
-10
-
LIMITS
TYP.
-
-
-
MAX.
5
10
1.0
UNIT
µA
µA
mA
-
5
100
µA
-
-
30
mA
-
-
10
µA
-0.3
-
0.8
V
2.2
-
VCC +0.5 V
-
-
0.45
V
2.4
-
-
V
VCC -0.7
-
VCC
V
READ OPERATION AC CHARACTERISTICS
(VCC = 5.0V ±5%, for 70, 90 and 120 nS; TA = 0 to 70° C)
PARAMETER
SYM. W27C020-70 W27C020-90 W27C020-12 UNIT
MIN. MAX. MIN. MAX. MIN. MAX.
Read Cycle Time
TRC
70
-
90
-
120
-
nS
Chip Enable Access Time TCE
-
70
-
90
-
120 nS
Address Access Time
TACC
-
70
-
90
-
120 nS
Output Enable Access
Time
TOE
-
30
-
40
-
55
nS
OE High to High-Z Output ^TDF
-
25
-
25
-
30
nS
Output Hold from Address TOH
0
-
0
-
0
-
nS
Change
Note: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
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