M27C4001-10B1X STMICROELECTRONICS [STMicroelectronics], M27C4001-10B1X Datasheet - Page 7

• Manufacturer Part Number: M27C4001-10B1X
• Description: 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 9. Programming Mode DC Characteristics
(T
Note: 1. V
Table 10. Programming Mode AC Characteristics
(T
Note: 1. V
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C4001 are in the ’1’
state. Data is introduced by selectively program-
ming ’0’s into the desired bit locations. Although
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 ultraviolet
Symbol
Symbol
A
A
t
t
t
t
t
t
t
t
VPHEL
VCHEL
t
t
EHQX
QXGL
GLQV
GHQZ
GHAX
V
QVEL
ELEH
= 25 °C; V
V
= 25 °C; V
AVEL
V
V
I
I
V
I
CC
PP
2. Sampled only, not 100% tested.
OH
OL
LI
IH
ID
IL
CC
CC
must be applied simultaneously with or before V
must be applied simultaneously with or before V
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
t
t
t
VCS
t
OES
t
t
CC
CC
Alt
t
VPS
DFP
PW
DH
OE
AS
DS
AH
= 6.25V ± 0.25V; V
= 6.25V ± 0.25V; V
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
Parameter
High to Chip Enable Low
High to Chip Enable Low
Parameter
PP
PP
= 12.75V ± 0.25V)
= 12.75V ± 0.25V)
PP
PP
and removed simultaneously or after V
and removed simultaneously or after V
Test Condition
0
I
OH
I
(1)
OL
(1)
E = V
V
= –400 A
= 2.1mA
light (UV EPROM). The M27C4001 is in the pro-
gramming mode when V
at V
grammed is applied to 8 bits in parallel to the data
output pins. The levels required for the address
and data inputs are TTL. V
6.25V ± 0.25V.
IN
Test Condition
IL
IH
V
CC
and E is pulsed to V
11.5
–0.3
Min
2.4
2
Min
95
PP
PP
2
2
2
2
2
2
0
0
PP
.
.
input is at 12.75V, G is
IL
V
CC
. The data to be pro-
CC
Max
12.5
±10
0.8
0.4
50
50
is specified to be
+ 0.5
Max
105
100
130
M27C4001
Unit
mA
mA
Unit
V
V
V
V
V
ns
ns
ns
A
s
s
s
s
s
s
s
7/17