AT28C256E-20PI ATMEL Corporation, AT28C256E-20PI Datasheet - Page 4

• Manufacturer Part Number: AT28C256E-20PI
• Description: 256K 32K x 8 Paged CMOS E2PROM
• Manufacturer: ATMEL Corporation

Notes: 1. X can be V
Device Operation (Continued)
DC and AC Operating Range
DEVICE IDENTIFICATION: A n e x t r a 6 4 - b y t e s o f
E
identification. By raising A9 to 12V
dress locations 7FC0H to 7FFFH the additional bytes may
be written to or read from in the same manner as the regu-
lar memory array.
Operating Modes
DC Characteristics
2-220
2
Symbol
I
I
I
I
I
V
V
V
V
Operating
Temperature (Case)
V
LI
LO
SB1
SB2
CC
PROM memory are available to the user for device
Mode
Read
Write
Standby/Write Inhibit
Write Inhibit
Write Inhibit
Output Disable
Chip Erase
IL
IH
OL
OH
CC
Power Supply
2. Refer to AC Programming Waveforms.
(2)
Input Load Current
Output Leakage Current
V
V
V
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Parameter
CC
CC
CC
Active Current
Standby Current CMOS
Standby Current TTL
IL
or V
AT28C256
IH
Com.
Ind.
Mil.
.
0.5V and using ad-
AT28C256-15
-55°C - 125°C
-40°C - 85°C
V
CE
V
V
V
0°C - 70°C
X
X
X
5V
IH
IL
IL
IL
10%
Condition
V
V
CE = V
CE = 2.0V to V
f = 5 MHz; I
I
I
OL
OH
IN
I/O
= 2.1 mA
= 0V to V
= -400 A
= 0V to V
CC
- 0.3V to V
OUT
CC
AT28C256-20
-55°C - 125°C
CC
-40°C - 85°C
V
CC
0°C - 70°C
X
5V
= 0 mA
3. V
OE
V
V
OPTIONAL CHIP ERASE MODE: The entire device can
be erased using a 6-byte software code. Please see Soft-
ware Chip Erase application note for details.
V
V
H
+ 1V
X
IL
IH
(1)
IL
IH
+ 1V
(3)
H
10%
CC
= 12.0V
+ 1V
0.5V.
Com., Ind.
Mil.
AT28C256-25
-55°C - 125°C
-40°C - 85°C
0°C - 70°C
5V
WE
V
V
V
V
X
X
X
IL
IH
IH
IL
10%
Min
2.0
2.4
I/O
D
D
High Z
High Z
High Z
AT28C256-35
-55°C - 125°C
OUT
IN
Max
200
300
5V
0.8
.45
10
10
50
3
10%
Units
mA
mA
V
V
V
V
A
A
A
A