AT27C020 Ver la hoja de datos (PDF) - Atmel Corporation
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AT27C020 Datasheet PDF : 14 Pages
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6. Operating Modes
Mode/Pin
CE
OE
PGM
Ai
VPP
Outputs
Read
VIL
VIL
X(1)
Ai
X
DOUT
Output Disable
X
VIH
X
X
X
High-Z
Standby
VIH
X
X
X
X
High-Z
Rapid Program(2)
VIL
VIH
VIL
Ai
VPP
DIN
PGM Verify
VIL
VIL
VIH
Ai
VPP
DOUT
PGM Inhibit
VIH
X
X
X
VPP
High-Z
Product Identification(4)
A9 = VH(3)
VIL
VIL
X
A0 = VIH or VIL
X
A1 - A17 = VIL
Notes: 1. X can be VIL or VIH.
2. Refer to Programming Characteristics.
Identification Code
3. VH = 12.0 ± 0.5V.
4. Two identifier bytes may be selected. All Ai inputs are held low (VIL) except A9, which is set to VH and A0, which is toggled
low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.
7. DC and AC Operating Conditions for Read Operation
Operating Temperature (Case)
VCC Power Supply
Ind.
Auto.
AT27C020
-55
-90
-40° C - 85° C
-40° C - 85° C
-40° C - 125° C
5V ± 10%
5V ± 10%
8. DC and Operating Characteristics for Read Operation
Symbol Parameter
Condition
Min
Max
Units
ILI
ILO
IPP(2)
ISB
ICC
VIL
VIH
VOL
VOH
Notes:
Input Load Current
Output Leakage Current
VPP(1) Read/Standby Current
VCC(1) Standby Current
VCC Active Current
Input Low Voltage
VIN = 0V to VCC (Com., Ind.)
VOUT = 0V to VCC (Com., Ind.)
VPP = VCC
ISB1 (CMOS), CE = VCC ± 0.3V
ISB2 (TTL), CE = 2.0 to VCC + 0.5V
f = 5 MHz, IOUT = 0 mA, CE = VIL
±1.0
µA
±5.0
µA
±10
µA
100
µA
1.0
mA
25
mA
-0.6
0.8
V
Input High Voltage
2.0
VCC + 0.5
V
Output Low Voltage
IOL = 2.1 mA
0.4
V
Output High Voltage
IOH = -400 µA
2.4
V
1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.
2. VPP may be connected directly to VCC except during programming. The supply current would then be the sum of ICC and IPP.
4 AT27C020
0570G–EPROM–12/07
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