6. Operating Modes
Mode/Pin
CE
VIL
X
OE
VIL
VIH
X
PGM
X(1)
X
Ai
VPP
X
Outputs
DOUT
Read
Ai
Output Disable
Standby
X
X
High Z
High Z
DIN
VIH
VIL
VIL
VIH
X
X
X(5)
VPP
VPP
VPP
Rapid Program(2)
PGM Verify
PGM Inhibit
VIH
VIL
X
VIL
VIH
X
Ai
Ai
DOUT
X
High Z
(3)
A9 = VH
Product Identification(4)
VIL
VIL
X
A0 = VIH or VIL
A1 - A15 = VIL
VCC
Identification Code
Notes: 1. X can be VIL or VIH.
2. Refer to Programming Characteristics.
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
AT27C1024
-45
-70
Ind.
-40°C - 85°C
-40°C - 85°C
Operating Temp. (Case)
VCC Power Supply
Auto.
5V 10%
5V 10%
8. DC and Operating Characteristics for Read Operation
Symbol
Parameter
Condition
Min
Max
Units
µA
µA
µA
µA
µA
µA
mA
mA
V
Ind.
1
ILI
Input Load Current
VIN = 0V to VCC
Auto.
Ind.
5
5
10
ILO
Output Leakage Current
VPP(1)) Read/Standby Current
VCC(1) Standby Current
VOUT = 0V to VCC
VPP = VCC
Auto.
(2)
IPP1
10
ISB1 (CMOS), CE = VCC 0.3V
100
1
ISB
ISB2 (TTL), CE = 2.0 to VCC + 0.5V
f = 5 MHz, IOUT = 0 mA, CE = VIL
ICC
VCC Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
30
VIL
-0.6
2.0
0.8
VIH
VOL
VOH
VCC + 0.5
0.4
V
IOL = 2.1 mA
IOH = -400 µA
V
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
AT27C1024
0019M–EPROM–12/07