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AT29C256 Datasheet(PDF) 5 Page - ATMEL Corporation

Part No. AT29C256
Description  256K 32K x 8 5-volt Only CMOS Flash Memory
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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5
AT29C256
0046P–FLASH–10/04
Notes:
1. X can be V
IL or VIH.
2. Refer to AC Programming Waveforms.
3. VH = 12.0V
± 0.5V.
4. Manufacturer Code: 1F, Device Code: DC.
5. See details under Software Product Identification Entry/Exit.
DC and AC Operating Range
AT29C256-70
AT29C256-90
AT29C256-12
AT29C256-15
Operating
Temperature (Case)
Com.
0°C - 70°C
0°C - 70°C
0°C - 70°C
0°C - 70°C
Ind.
-40°C - 85°C
-40°C - 85°C
-40°C - 85°C
-40°C - 85°C
VCC Power Supply
5V
± 5%
5V
± 10%
5V
± 10%
5V
± 10%
Note:
Not recommended for New Designs.
Operating Modes
Mode
CE
OE
WE
Ai
I/O
Read
VIL
VIL
VIH
Ai
DOUT
Program
(2)
V
IL
V
IH
V
IL
Ai
D
IN
5V Chip Erase
V
IL
V
IH
V
IL
Ai
Standby/Write Inhibit
VIH
X
(1)
X
X
High Z
Write Inhibit
X
X
V
IH
Write Inhibit
X
V
IL
X
Output Disable
X
VIH
X
High Z
High Voltage Chip Erase
V
IL
V
H
(3)
V
IL
X
High Z
Product Identification
Hardware
VIL
VIL
VIH
A1-A14 = VIL, A9 = VH, A0 = VIL
Manufacturer Code
(4)
A1-A14 = V
IL, A9 = VH, A0 = VIH
Device Code
(4)
Software
(5)
A0 = V
IL
Manufacturer Code
(4)
A0 = VIH
Device Code
(4)
DC Characteristics
Symbol
Parameter
Condition
Min
Max
Units
I
LI
Input Load Current
V
IN = 0V to VCC
10
µA
ILO
Output Leakage Current
VI/O = 0V to VCC
10
µA
I
SB1
V
CC Standby Current CMOS
CE = V
CC - 0.3V to VCC
300
µA
I
SB2
V
CC Standby Current TTL
CE = 2.0V to V
CC
3mA
ICC
VCC Active Current
f = 5 MHz; IOUT = 0 mA
50
mA
V
IL
Input Low Voltage
0.8
V
V
IH
Input High Voltage
2.0
V
V
OL
Output Low Voltage
I
OL = 2.1 mA
0.45
V
V
OH1
Output High Voltage
I
OH = -400 µA
2.4
V
V
OH2
Output High Voltage CMOS
I
OH = -100 µA; VCC = 4.5V
4.2
V




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