AT29C256
DC and AC Operating Range
AT29C256-70
Operating
Temperature (Case)
V
CC
Power Supply
Note:
Com.
Ind.
0°C - 70°C
-40°C - 85°C
5V
±
5%
Not recommended for New Designs.
AT29C256-90
0°C - 70°C
-40°C - 85°C
5V± 10%
AT29C256-12
0°C - 70°C
-40°C - 85°C
5V± 10%
AT29C256-15
0°C - 70°C
-40°C - 85°C
5V± 10%
Operating Modes
Mode
Read
Program
(2)
5V Chip Erase
Standby/Write Inhibit
Write Inhibit
Write Inhibit
Output Disable
High Voltage Chip Erase
Product Identification
Hardware
V
IL
V
IL
V
IH
A1-A14 = V
IL
, A9 = V
H
, A0 = V
IL
A1-A14 = V
IL
, A9 = V
H
, A0 = V
IH
Software
Notes:
1.
2.
3.
4.
5.
(5)
CE
V
IL
V
IL
V
IL
V
IH
X
X
X
V
IL
OE
V
IL
V
IH
V
IH
X
(1)
X
V
IL
V
IH
V
H(3)
WE
V
IH
V
IL
V
IL
X
V
IH
X
X
V
IL
Ai
Ai
Ai
Ai
X
I/O
D
OUT
D
IN
High Z
High Z
X
High Z
Manufacturer Code
(4)
Device Code
(4)
Manufacturer Code
(4)
Device Code
(4)
A0 = V
IL
A0 = V
IH
X can be V
IL
or V
IH
.
Refer to AC Programming Waveforms.
V
H
= 12.0V
±
0.5V.
Manufacturer Code: 1F, Device Code: DC.
See details under Software Product Identification Entry/Exit.
DC Characteristics
Symbol
I
LI
I
LO
I
SB1
I
SB2
I
CC
V
IL
V
IH
V
OL
V
OH1
V
OH2
Parameter
Input Load Current
Output Leakage Current
V
CC
Standby Current CMOS
V
CC
Standby Current TTL
V
CC
Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Output High Voltage CMOS
I
OL
= 2.1 mA
I
OH
= -400 µA
I
OH
= -100 µA; V
CC
= 4.5V
2.4
4.2
2.0
0.45
Condition
V
IN
= 0V to V
CC
V
I/O
= 0V to V
CC
CE = V
CC
- 0.3V to V
CC
CE = 2.0V to V
CC
f = 5 MHz; I
OUT
= 0 mA
Min
Max
10
10
300
3
50
0.8
Units
µA
µA
µA
mA
mA
V
V
V
V
V
5
0046P–FLASH–10/04
ATMEL [ ATMEL CORPORATION ]
