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參數(shù)資料
| 型號： | 27C020 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | LED 591NM AMBER SMD PLCC4 |
| 中文描述： | 2兆位（256畝× 8位）的CMOS存儲器 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大小： | 170K |
| 代理商： | 27C020 |
AT27C020
7
AC Programming Characteristics
T
A
= 25 ± 5°C, V
CC
= 6.5 ± 0.25V,V
PP
= 13.0 ± 0.25V
Notes:
1. V
CC
must be applied simultaneously or before V
PP
and removed simultaneously or after V
PP
.
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven
— see timing diagram.
3. Program Pulse width tolerance is 100
μ
s
±
5%.
Symbol
Parameter
Test Condition
(1)
Limits
Units
Min
Max
t
AS
t
CES
t
OES
t
DS
t
AH
t
DH
t
DFP
t
VPS
t
VCS
t
PW
t
OE
Address Setup Time
Input Rise and Fall Times:
(10% to 90%) 20 ns.
Input Pulse Levels:
0.45V to 2.4V
Input Timing Reference Level:
0.8V to 2.0V
Output Timing Reference Level:
0.8V to 2.0V
2
μ
s
CE Setup Time
2
μ
s
OE Setup Time
2
μ
s
Data Setup Time
2
μ
s
Address Hold Time
0
μ
s
Data Hold Time
2
μ
s
OE High to Output Float Delay
(2)
0
130
ns
V
PP
Setup Time
V
CC
Set up Time
PGM Program Pulse Width
(3)
2
μ
s
2
μ
s
95
105
μ
s
Data Valid from OE
150
ns
t
PRT
V
Pulse Rise Time During
Programming
50
ns
Atmel’s 27C020 Integrated Product Identification Code
Pins
Codes
A0
O7
O6
O5
O4
O3
O2
O1
O0
Hex Data
Manufacturer
0
0
0
0
1
1
1
1
0
1E
Device Type
1
1
0
0
0
0
1
1
0
86
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