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AT27LV040A-12VI

P1-P3P4-P6P7-P9P10-P12
AT27LV040A
7
Programming Waveforms
(1)
Notes: 1. The Input Timing Reference is 0.8V for V
IL
and 2.0V for V
IH
.
2. t
OE
and t
DFP
are characteristics of the device but must be accommodated by the programmer.
3. When programming the AT27LV040A a 0.1
µ
F capacitor is required across V
PP
and ground to suppress spurious voltage
transients.
DC Programming Characteristics
T
A
= 25
±
5°C, V
CC
= 6.5
±
0.25V, V
PP
= 13.0
±
0.25V
Symbol Parameter Test Conditions
Limits
UnitsMin Max
I
LI
Input Load Current V
IN
=V
IL
,V
IH
±
10
µ
A
V
IL
Input Low Level -0.6 0.8 V
V
IH
Input High Level 2.0 V
CC
+ 0.5 V
V
OL
Output Low Voltage I
OL
= 2.1 mA 0.4 V
V
OH
Output High Voltage I
OH
= -400
µ
A2.4 V
I
CC2
V
CC
Supply Current (Program and Verify) 40 mA
I
PP2
V
PP
Supply Current CE = V
IL
20 mA
V
ID
A9 Product Identification Voltage 11.5 12.5 V
AT27LV040A
8
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
µsec
±
5%.
Note: 1. The AT27LV040A has the same Product Identification Code as the AT27C040. Both are programming compatible.
AC Programming Characteristics
T
A
= 25
±
5°C, V
CC
= 6.5
±
0.25V, V
PP
= 13.0
±
0.25V
Symbol Parameter Test Conditions
(1)
Limits
UnitsMin Max
t
AS
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
t
OES
OE Setup Time 2
µ
s
t
DS
Data Setup Time 2
µ
s
t
AH
Address Hold Time 0
µ
s
t
DH
Data Hold Time 2
µ
s
t
DFP
OE High to Output Float Delay
(2)
0 130 ns
t
VPS
V
PP
Setup Time 2
µ
s
t
VCS
V
CC
Setup Time 2
µ
s
t
PW
CE Program Pulse Width
(3)
95 105
µ
s
t
OE
Data Valid from OE
(2)
150 ns
t
PRT
V
PP
Pulse Rise Time During
Programming
50 ns
Atmel’s 27LV040A Integrated Product Identification Code
(1)
Codes
Pins
Hex
DataA0 O7 O6 O5 O4 O3 O2 O1 O0
Manufacturer 000011110 1E
Device Type 100001011 0B
AT27LV040A
9
Rapid
Programming Algorithm
A 100
µ
s CE pulse width is used to program. The address
is set to the first location. V
CC
is raised to 6.5V and V
PP
is
raised to 13.0V. Each address is first programmed with one
100
µ
s CE
pulse without verification. Then a verifica-
tion/reprogramming loop is executed for each address. In
the event a byte fails to pass verification, up to 10 succes-
sive 100
µ
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
PP
is then lowered to 5.0V and V
CC
to 5.0V. All
bytes are read again and compared with the original data to
determine if the device passes or fails.
P1-P3P4-P6P7-P9P10-P12

AT27LV040A-12VI

Mfr. #:
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Description:
IC EPROM 4M PARALLEL 32VSOP
Lifecycle:
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