参数资料
型号: AT27C2048-55JU
厂商: Atmel
文件页数: 3/12页
文件大小: 0K
描述: IC OTP 2MBIT 55NS 44PLCC
标准包装: 27
格式 - 存储器: EPROMs
存储器类型: EPROM OTP
存储容量: 2M (128K x 16)
速度: 55ns
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: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 管件
Atmel AT27C2048
4.
Absolute maximum ratings*
Temperature under bias . . . . . . . . . . . . . -55 ? C to +125 ? C
Storage temperature . . . . . . . . . . . . . . . . -65 ? C to +150 ? C
Voltage on any pin with
respect to ground . . . . . . . . . . . . . . . . . . . -2.0V to +7.0V (1)
Voltage on A9 with
respect to ground . . . . . . . . . . . . . . . . . -2.0V to +14.0V (1)
V PP supply voltage with
respect to ground . . . . . . . . . . . . . . . . . . -2.0V to +14.0V (1)
*NOTICE:
Stresses beyond those listed under “Absolute maximum
ratings” may cause permanent damage 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.
Note:
1. Maximum voltage is -0.6V DC, which may undershoot to -2.0V for pulses of less than 20ns. Maximum output pin voltage is
V CC + 0.75V DC, which may overshoot to +7.0V for pulses of less than 20ns.
5.
DC and AC characteristics
Table 5-1.
Operating modes
X
X
X
A9 = V H
Mode/Pin
Read
Output disable
Standby
Rapid program (2)
PGM verify
PGM inhibit
Product identification (4)
CE
V IL
X
V IH
V IL
V IL
V IH
V IL
OE
V IL
V IH
X
V IH
V IL
X
V IL
PGM
(1)
X
X
V IL
V IH
X
X
Ai
Ai
X
X
Ai
Ai
X
(3)
A0 = V IH or V IL
V PP
(1)
X
(5)
V PP
V PP
V PP
V CC
Outputs
D OUT
High Z
High Z
D IN
D OUT
High Z
Identification code
A1 - A16 = V IL
Notes:
1. X can be V IL or V IH .
2. Refer to the programming characteristics.
3. V H = 12.0 ? 0.5V.
4. Two identifier words may be selected. All Ai inputs are held low (V IL ), except A9, which is set to V H , and A0, which is tog-
gled low (V IL ) to select the manufacturer’s identification word and high (V IH ) to select the device code word.
5. Standby V CC current (I SB ) is specified with V PP = V CC . V CC > V PP will cause a slight increase in I SB .
Table 5-2.
DC and AC operating conditions for read operation
Atmel AT27C2048
-55
-90
Industrial operating temperature (case)
V CC power supply
-40 ? C - 85 ? C
5V ?? 10%
-40 ? C - 85 ? C
5V ?? 10%
3
0632G–EPROM–4/11
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