AT27LV520-90 ATMEL Corporation, AT27LV520-90 Datasheet - Page 7

• Manufacturer Part Number: AT27LV520-90
• Description: 512K 64K x 8 Multiplexed Addresses/ Outputs Low Voltage OTP EPROM
• Manufacturer: ATMEL Corporation

AC Programming Characteristics*
T
Notes:
Atmel’s 27LV520 Integrated Product Identification Code
A
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Manufacturer
Device Type
ALE
LAS
LAH
LP
OES
OEH
DS
DH
PW
VR
VCS
OE
DFP
AS
AH
PRT
= 25
Codes
1. V
2. Program Pulse width tolerance is 50 sec 5%.
3. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven
5 C, V
— see timing diagram.
Parameter
Address Latch Enable Width
Latched Address Setup Time
Latched Address Hold Time
ALE Low to OE/V
OE/V
OE/V
Data Setup Time
Data Hold Time
ALE Program Pulse Width
OE/V
V
Data Valid from OE/V
OE/V
Address Setup Time
Address Hold Time
OE/V
Programming
CC
CC
must be applied simultaneously or before OE/V
CC
Setup Time
PP
PP
PP
PP
PP
= 6.5
Setup Time
Hold Time
Recovery Time
High to Output Float Delay
Pulse Rise Time During
A8
0
1
(1)
0.25V, OE/V
PP
AD7
0
1
High Voltage Delay
PP
(2)
PP
AD6
= 13.0
0
0
(4)
0.25V
AD5
0
0
Input Rise and Fall Times
Input Pulse Levels
Input Timing Reference Level
Output Timing Reference Level
PP
and removed simultaneously or after OE/V
AD4
Pins
Test Conditions
1
1
(10% to 90%) 20 ns
AD3
1
1
0.45V to 2.4V
0.8V to 2.0V
0.8V to 2.0V
AD2
1
1
47.5
AD1
Min
500
100
100
50
2
2
2
2
2
2
2
0
2
0
1
0
Limits
PP
.
AD0
Max
52.5
0
1
150
130
Data
Hex
Units
9D
1E
ns
ns
ns
ns
ns
ns
s
s
s
s
s
s
s
s
s
s
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