M27W064-110N1T STMicroelectronics, M27W064-110N1T Datasheet - Page 7

• Manufacturer Part Number: M27W064-110N1T
• Description: 64 Mbit 4Mb x16 3V Supply FlexibleROM Memory
• Manufacturer: STMicroelectronics

Table 9. Programming Mode DC Characteristics
(T
Note: 1. V
Table 10. Programming Mode AC Characteristics
(T
Note: 1. V
Programming
The M27W101 has been designed to be fully com-
patible with the M27C1001 and has the same elec-
tronic signature. As a result the M27W101 can be
programmed as the M27C1001 on the same pro-
gramming equipment applying 12.75V on V
6.25V on V
rithm. When delivered (and after each ‘1’s erasure
for UV EPROM), all bits of the M27W101 are in the
’1’ state. Data is introduced by selectively pro-
gramming ’0’s into the desired bit locations. Al-
A
A
t
Symbol
GHQZ
t
t
t
t
t
t
t
t
VPHPL
VCHPL
t
t
= 25 C; V
= 25 C; V
PHQX
GHAX
Symbol
QVPL
PLPH
QXGL
GLQV
AVPL
ELPL
2. Sampled only, not 100% tested.
V
V
I
V
V
I
V
I
CC
PP
OL
OH
LI
IH
ID
IL
(2)
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
t
t
Alt
t
t
VPS
VCS
CES
t
OES
t
DFP
t
using the same PRESTO II algo-
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 Program Low
Input Valid to Program Low
VPP High to Program Low
VCC High to Program Low
Chip Enable Low to Program Low
Program Pulse Width
Program 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
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
V
I
(1)
OH
I
IL
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’ is by die exposure to ultra-
violet light (UV EPROM). The M27W101 is in the
programming mode when V
E is at V
programmed is applied to 8 bits in parallel to the
data output pins. The levels required for the ad-
dress and data inputs are TTL. V
be 6.25V
E = V
= –400 A
= 2.1mA
V
IN
Test Condition
IL
V
IL
IH
and P is pulsed to V
0.25V.
–0.3
11.5
Min
2.4
2
PP
PP
.
.
Min
95
2
2
2
2
2
2
2
0
0
V
PP
CC
Max
12.5
0.8
0.4
50
50
10
input is at 12.75V,
+ 0.5
IL
CC
. The data to be
Max
105
100
130
is specified to
M27W101
Unit
mA
mA
V
V
V
V
V
A
Unit
ns
ns
ns
7/15
s
s
s
s
s
s
s
s