AT27LV020A-15 ATMEL [ATMEL Corporation], AT27LV020A-15 Datasheet - Page 8

• Manufacturer Part Number: AT27LV020A-15
• Description: 2 Megabit 256K x 8 Low Voltage OTP EPROM
• Manufacturer: ATMEL [ATMEL Corporation]

AC Programming Characteristics
T
*AC Conditions of Test:
Notes:
Atmel's 27LV020A Integrated
Product Identification Code
Note:
8
Symbol Parameter
t
t
t
t
t
t
t
t
t
t
t
t
A
AS
CES
OES
DS
AH
DH
DFP
VPS
VCS
PW
OE
PRT
Codes
Manufacturer
Device Type
= 25 ± 5°C, V
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
1. V
2. This parameter is only sampled and is not 100%
3. Program Pulse width tolerance is 100
1. The AT27LV020A has the same Product Identification
Address Setup Time
CE Setup Time
OE Setup Time
Data Setup Time
Address Hold Time
Data Hold Time
OE High to Output
Float Delay
V
V
PGM Program Pulse Width
Data Valid from OE
V
During Programming
PP
CC
PP
and removed simultaneously or after V
tested. Output Float is defined as the point where
data is no longer driven —see timing diagram.
Code as the AT27C020. Both are programming com-
patible.
CC
Setup Time
Pulse Rise Time
Setup Time
A0
0
1
must be applied simultaneously or before V
CC
O7
0
1
= 6.5 ± 0.25V, V
AT27LV020A
O6
0
0
Test
Conditions*
O5
0
0
Pins
O4
1
0
PP
(1)
O3
1
0
= 13.0 ± 0.25V
Min
95
50
O2
(1)
2
2
2
2
0
2
0
2
2
1
1
Limits
O1
PP
1
1
130
150
105
Max
sec
.
O0
0
0
Units
5%.
PP
Data
ns
ns
ns
Hex
1E
86
s
s
s
s
s
s
s
s
s
Rapid Programming Algorithm
A 100
address is set to the first location. V
V
with one 100 s PGM pulse without verification. Then a
verification/reprogramming loop is executed for each
address. In the event a byte fails to pass verification, up to
10 successive 100 s pulses are applied with a verification
after each pulse. If the byte fails to verify after 10 pulses
have been applied, the part is considered failed. After the
byte verifies properly, the next address is selected until all
have been checked. V
to 5.0V. All bytes are read again and compared with the
original data to determine if the device passes or fails.
PP
is raised to 13.0V. Each address is first programmed
s PGM pulse width is used to program. The
PP
is then lowered to 5.0V and V
CC
is raised to 6.5V and
CC