5962-8863401UX_ データシートの表示（PDF） - Atmel Corporation
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5962-8863401UX_ Datasheet PDF : 12 Pages
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Device Operation (Continued)
DEVICE IDENTIFICATION: A n e x t r a 6 4 - b y t e s o f
E2PROM memory are available to the user for device
identification. By raising A9 to 12V ± 0.5V and using ad-
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.
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.
DC and AC Operating Range
Operating
Temperature (Case)
VCC Power Supply
Com.
Ind.
Mil.
AT28HC256-70
0°C - 70°C
-40°C - 85°C
5V ± 10%
AT28HC256-90
0°C - 70°C
-40°C - 85°C
-55°C - 125°C
5V ± 10%
AT28HC256-12
0°C - 70°C
-40°C - 85°C
-55°C - 125°C
5V ± 10%
Operating Modes
Mode
CE
Read
VIL
Write (2)
VIL
Standby/Write Inhibit
VIH
Write Inhibit
X
Write Inhibit
X
Output Disable
X
Chip Erase
VIL
Notes: 1. X can be VIL or VIH.
2. Refer to AC Programming Waveforms.
OE
WE
VIL
VIH
VIH
VIL
X (1)
X
X
VIH
VIL
X
VIH
X
VH (3)
VIL
3. VH = 12.0V ± 0.5V.
I/O
DOUT
DIN
High Z
High Z
High Z
DC Characteristics
Symbol
ILI
ILO
Parameter
Input Load Current
Output Leakage Current
Condition
VIN = 0V to VCC + 1V
VI/O = 0V to VCC
ISB1
VCC Standby Current TTL
CE = 2.0V to VCC + 1V
ISB2
VCC Standby Current CMOS CE = -3.0V to VCC + 1V
ICC
VCC Active Current
f = 5 MHz; IOUT = 0 mA
VIL
Input Low Voltage
VIH
Input High Voltage
VOL
Output Low Voltage
IOL = 6.0 mA
VOH
Output High Voltage
IOH = -4 mA
Min
AT28HC256-90, -12
AT28HC256-70
AT28HC256-90, -12
2.0
2.4
Max Units
10
µA
10
µA
3
mA
60 mA
300 µA
80 mA
0.8
V
V
.45
V
V
2-282
AT28HC256
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