参数资料
型号: AT28HC256-12SU
厂商: Atmel
文件页数: 5/24页
文件大小: 0K
描述: IC EEPROM 256KBIT 120NS 28SOIC
标准包装: 27
格式 - 存储器: EEPROMs - 并行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 120ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
产品目录页面: 1458 (CN2011-ZH PDF)
AT28HC256
5. DC and AC Operating Range
AT28HC256-70
AT28HC256-90
AT28HC256-12
Operating
Ind.
-40°C - 85°C
-40°C - 85°C
-40°C - 85°C
Temperature (Case)
V CC Power Supply
Mil.
5V ± 10%
-55°C - 125°C
5V ± 10%
-55°C - 125°C
5V ± 10%
6. Operating Modes
Mode
Read
CE
V IL
OE
V IL
WE
V IH
I/O
D OUT
Write
(2)
V IL
V IH
V IL
D IN
Standby/Write Inhibit
Write Inhibit
Write Inhibit
Output Disable
Chip Erase
V IH
X
X
X
V IL
X (1)
X
V IL
V IH
V H (3)
X
V IH
X
X
V IL
High Z
High Z
High Z
Notes: 1. X can be V IL or V IH .
2. Refer to AC programming waveforms.
3. V H = 12.0V ± 0.5V.
7. Absolute Maximum Ratings*
Temperature under Bias ................................ -55°C to +125°C
Storage Temperature ..................................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground ...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground .............................-0.6V to V CC + 0.6V
Voltage on OE and A9
with Respect to Ground ...................................-0.6V to +13.5V
8. DC Characteristics
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability
Symbol
I LI
I LO
I SB1
I SB2
I CC
Parameter
Input Load Current
Output Leakage Current
V CC Standby Current TTL
V CC Standby Current CMOS
V CC Active Current
Condition
V IN = 0V to V CC + 1V
V I/O = 0V to V CC
CE = 2.0V to V CC
CE = V CC - 0.3V to V CC
f = 5 MHz; I OUT = 0 mA
AT28HC256-90, -12
AT28HC256-70
AT28HC256-90, -12
Min
Max
10
10
3
60
300
80
Units
μA
μA
mA
mA
μA
mA
V IL
V IH
Input Low Voltage
Input High Voltage
2.0
0.8
V
V
V OL
V OH
Output Low Voltage
Output High Voltage
I OL = 6.0 mA
I OH = -4 mA
2.4
0.45
V
V
5
0007N–PEEPR–9/09
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