M27C2001-10C1X STMICROELECTRONICS [STMicroelectronics], M27C2001-10C1X Datasheet - Page 6

• Manufacturer Part Number: M27C2001-10C1X
• Description: 2 Mbit (256Kb x 8) UV EPROM and OTP EPROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M27C2001
Table 8B. Read Mode AC Characteristics
(TA = 0 to 70 C or –40 to 85 C; V
Note: 1. V
Figure 5. Read Mode AC Waveforms
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C2001 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 exposition to ultravio-
6/16
t
t
Symbol
GHQZ
EHQZ
t
t
t
t
GLQV
AXQX
AVQV
ELQV
2. Sampled only, not 100% tested.
(2)
(2)
CC
Q0-Q7
A0-A17
E
G
must be applied simultaneously with or before V
t
ACC
t
t
t
Alt
t
t
CE
OE
DF
DF
OH
Address Valid to Output
Valid
Chip Enable Low to
Output Valid
Output Enable Low to
Output Valid
Chip Enable High to
Output Hi-Z
Output Enable High to
Output Hi-Z
Address Transition to
Output Transition
Parameter
CC
tAVQV
tELQV
= 5V
tGLQV
VALID
Test Condition
E = V
E = V
(1)
5% or 5V
PP
G = V
E = V
G = V
E = V
IL
IL
and removed simultaneously or after V
, G = V
, G = V
IL
IL
IL
IL
let light (UV EPROM). The M27C2001 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 0.25V.
IL
IL
10%; V
Min
0
0
0
IL
-10
PP
tAXQX
and P is pulsed to V
Max
100
100
50
30
30
= V
CC
Min
tEHQZ
tGHQZ
M27V2001
)
VALID
0
0
0
-12
PP
Max
120
120
.
50
40
40
PP
input is at 12.75V,
Min
IL
-15/-20/-25
CC
0
0
0
. The data to be
AI00719B
is specified to
Hi-Z
Max
150
150
60
50
50
Unit
ns
ns
ns
ns
ns
ns