M27W801-100B6TR STMICROELECTRONICS [STMicroelectronics], M27W801-100B6TR Datasheet - Page 7

• Manufacturer Part Number: M27W801-100B6TR
• Description: 8 Mbit 1Mb x8 Low Voltage UV EPROM and OTP EPROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 9. Programming Mode DC Characteristics
(T
Note: 1. V
Table 10. MARGIN MODE AC Characteristics
(T
Note: 1. V
Programming
The M27W801 has been designed to be fully com-
patible with the M27C801 and has the same elec-
tronic signature. As a result the M27W801 can be
programmed as the M27C801 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 M27W801 are
in the ”1” state. Data is introduced by selectively
programming ”0”s into the desired bit locations.Al-
Symbol
A
A
Symbol
t
t
t
t
t
t
A9HVPH
t
A10HEH
VPXA9X
EXA10X
A10LEH
V
VPHEL
EXVPX
= 25 C; V
V
= 25 C; V
I
V
V
I
V
I
CC
PP
OH
OL
LI
IH
ID
IL
CC
CC
must be applied simultaneously with or before V
must be applied simultaneously with or before V
CC
Input Leakage Current
Supply Current
Program Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage TTL
A9 Voltage
t
t
t
by the use of the same PRESTO IIB
CC
CC
t
t
t
t
AS10
AS10
AH10
Alt
VPS
VPH
AS9
AH9
= 6.25V
= 6.25V
V
V
V
V
Chip Enable Transition to V
Chip Enable Transition to V
V
Parameter
A9
PP
A10
A10
PP
High to V
High to Chip Enable Low
Transition to V
High to Chip Enable High (Set)
Low to Chip Enable High (Reset)
0.25V; V
0.25V; V
PP
Parameter
High
PP
PP
A9
= 12.75V
= 12.75V
Transition
PP
A10
PP
and
PP
PP
Transition
(1)
Transition
and removed simultaneously or after V
and removed simultaneously or after V
Test Conditio n
V
I
I
0.25V)
IL
0.25V)
(1)
OL
OH
E = V
= 2.1mA
though only ’0’ will be programmed, both ”1” and
”0” can be present in the data word. The only way
to change a ‘0’ to a ‘1’ is by die exposure to ultra-
violet light (UV EPROM). The M27W801 is in the
programming mode when V
and E is pulsed to V
is applied to 8 bits in parallel to the data output
pins. The levels required for the address and data
inputs are TTL. V
0.25V.
V
= –1mA
IN
IL
V
Test Condition
IH
CC
–0.3
11.5
Min
3.6
IL
2
. The data to be programmed
is specified to be 6.25V
PP
PP
Min
.
2
2
1
1
1
2
2
.
V
PP
CC
Max
12.5
0.8
0.4
50
50
input is at 12.75V
10
+ 0.5
Max
M27W801
Unit
mA
mA
V
V
V
V
V
Unit
A
s
s
s
s
s
s
s
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