M27C4002-10B1X STMICROELECTRONICS [STMicroelectronics], M27C4002-10B1X Datasheet - Page 8

• Manufacturer Part Number: M27C4002-10B1X
• Description: 4 Mbit (256Kb x16) UV EPROM and OTP EPROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M27C4002
Table 9. Programming Mode AC 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 M27C4002 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
8/18
A
A
Symbol
Symbol
t
t
t
t
t
t
t
t
VPHEL
VCHEL
t
t
= 25 °C; V
= 25 °C; V
EHQX
QXGL
GLQV
GHQZ
GHAX
QVEL
AVEL
ELEH
V
V
2. Sampled only, not 100% tested.
I
V
V
I
V
I
CC
PP
OH
LI
OL
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
CC
CC
t
t
t
t
t
t
t
Alt
t
t
VPS
VCS
OES
DFP
t
PW
DS
DH
OE
AH
AS
= 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
V
I
OH
I
IL
OL
(1)
(1)
E = V
= –400µA
= 2.1mA
light (UV EPROM). The M27C4002 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 ± 0.25V.
V
IN
IL
IH
V
Test Condition
IH
and E is pulsed to V
–0.3
11.5
Min
2.4
2
PP
PP
PP
.
.
Min
95
2
2
2
2
2
2
0
0
V
input is at 12.75V, G is
IL
CC
CC
. The data to be pro-
12.5
Max
±10
0.8
0.4
50
50
+ 0.5
is specified to be
Max
105
100
130
Unit
mA
mA
µA
V
V
V
V
V
Unit
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns