M27W401-80XN6TR STMicroelectronics, M27W401-80XN6TR Datasheet - Page 7

• Manufacturer Part Number: M27W401-80XN6TR
• Description: 4 Mbit 512Kb x 8 Low Voltage UV EPROM and OTP EPROM
• Manufacturer: STMicroelectronics

Table 9. Programming Mode DC Characteristics
(T
Note: 1. V
Table 10. Programming Mode AC Characteristics
(T
Note: 1. V
Programming
The M27W402 has been designed to be fully com-
patible with the M27C4002 and has the same elec-
tronic signature. As a result the M27W402 can be
programmed as the M27C4002 on the same pro-
gramming equipment applying 12.75V on V
6.25V on V
algorithm. When delivered (and after each ‘1’s era-
sure for UV EPROM), all bits of the M27W402 are
in the ’1’ state. Data is introduced by selectively
programming ’0’s into the desired bit locations. Al-
A
A
Symbol
t
t
t
t
t
t
t
t
t
VPHEL
VCHEL
t
= 25 C; V
= 25 C; V
EHQX
GHQZ
GHAX
Symbol
QVEL
ELEH
QXGL
GLQV
AVEL
2. Sampled only, not 100% tested.
V
V
I
V
V
I
V
I
CC
PP
OL
OH
LI
IH
ID
IL
CC
CC
must be applied simultaneously with or before V
must be applied simultaneously with or before V
CC
CC
CC
t
t
t
t
by the use of the same PRESTO II
t
Alt
t
t
VPS
VCS
t
OES
t
DFP
t
PW
AS
DS
DH
OE
AH
Input Leakage Current
Supply Current
Program Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage TTL
A9 Voltage
= 6.25V
= 6.25V
Address Valid to Chip Enable Low
Input Valid to Chip Enable Low
V
V
Chip Enable Program Pulse Width
Chip Enable High to Input Transition
Input Transition to Output Enable Low
Output Enable Low to Output Valid
Output Enable High to Output Hi-Z
Output Enable High to Address
Transition
PP
CC
High to Chip Enable Low
High to Chip Enable Low
Parameter
0.25V; V
0.25V; V
Parameter
PP
PP
= 12.75V
= 12.75V
PP
and
PP
PP
and removed simultaneously or after V
and removed simultaneously or after V
0.25V)
0.25V)
(1)
Test Condition
0V
I
(1)
OH
I
OL
though only ’0’s will be programmed, both ’1’s and
’0’s can be present in the data word. The only way
to change a ‘0’ to a ‘1’ by die exposure to ultraviolet
light (UV EPROM). The M27W402 is in the pro-
gramming mode when V
at V
grammed is applied to 16 bits in parallel to the data
output pins. The levels required for the address
and data inputs are TTL. V
6.25V
E = V
= –400 A
V
= 2.1mA
IN
IH
Test Condition
IL
and E is pulsed to V
V
0.25V.
CC
–0.3
11.5
Min
2.4
2
PP
PP
PP
.
.
Min
95
2
2
2
2
2
2
0
0
input is at 12.75V, G is
IL
V
CC
. The data to be pro-
CC
Max
12.5
0.8
0.4
50
50
10
+ 0.5
is specified to be
Max
105
100
130
M27W402
Unit
mA
mA
V
V
V
V
V
A
Unit
ns
ns
ns
7/15
s
s
s
s
s
s
s