AT27C2048-55JI_07 View Datasheet(PDF) - Atmel Corporation
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AT27C2048-55JI_07 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(1)
DOUT
Output Disable
X
VIH
X
X
X
High Z
Standby
VIH
X
X
X
X(5)
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)
VIL
VIL
X
Notes: 1. X can be VIL or VIH.
2. Refer to the Programming characteristics.
A9 = VH(3)
A0 = VIH or VIL
A1 - A16 = VIL
VCC
Identification Code
3. VH = 12.0 ± 0.5V.
4. Two identifier words 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 word and high (VIH) to select the Device Code word.
5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB.
7. DC and AC Operating Conditions for Read Operation
Industrial Operating Temperature (Case)
VCC Power Supply
-55
-40° C - 85° C
5V ± 10%
AT27C2048
-90
-40° C - 85° C
5V ± 10%
8. DC and Operating Characteristics for Read Operation
Symbol Parameter
Condition
Min
Max
Units
ILI
Input Load Current
VIN = 0V to VCC
±1
µA
ILO
IPP1(2)
Output Leakage Current
VPP(1) Read/Standby Current
VOUT = 0V to VCC
VPP = VCC
±5
µA
10
µA
ISB1 (CMOS)
ISB
VCC(1) Standby Current
CE = VCC ± 0.3V
ISB2 (TTL)
CE = 2.0 to VCC + 0.5V
100
µA
1
mA
ICC
VCC Active Current
f = 5 MHz, IOUT = 0 mA, CE = VIL
35
mA
VIL
Input Low Voltage
-0.6
0.8
V
VIH
Input High Voltage
2.0
VCC + 0.5
V
VOL
Output Low Voltage
IOL = 2.1 mA
0.4
V
VOH
Output High Voltage
IOH = -400 µA
2.4
V
Notes: 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 AT27C2048
0632F–EPROM–12/07
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