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| AT27C040_07 Datasheet, PDF (4/14 Pages) ATMEL Corporation – 4-Megabit | |||
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6. Operating Modes
Mode/Pin
Read
CE
OE
Ai
VPP
Outputs
VIL
VIL
Ai
X(1)
DOUT
Output Disable
X
VIH
X
X
High Z
Standby
VIH
X
X
X
High Z
Rapid Program(2)
VIL
VIH
Ai
VPP
DIN
PGM Verify
X
VIL
Ai
VPP
DOUT
PGM Inhibit
Product Identification(4)
VIH
VIH
VIL
VIL
X
A9 = VH(3)
A0 = VIH or VIL
A1 - A18 = VIL
VPP
High Z
X
Identification Code
Notes: 1. X can be VIL or VIH.
2. Refer to Programming Characteristics
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 Manufacturerâs Identification byte and high (VIH) to select the Device Code byte.
7. DC and AC Operating Conditions for Read Operation
Industrial Operating Temperature (Case)
VCC Power Supply
AT27C040-70
-40°C - 85°C
5V ± 10%
AT27C040-90
-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
ISB
VCC1(1) Standby Current
ISB1 (CMOS), 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
30
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
Notes:
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 AT27C040
0189HâEPROMâ12/07
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