M27C801-100B STMicroelectronics, M27C801-100B Datasheet - Page 7

• Manufacturer Part Number: M27C801-100B
• Description: 8 Mbit 1Mb x 8 UV EPROM and OTP EPROM
• Manufacturer: STMicroelectronics

Table 9. Programming Mode DC Characteristics
(T
Note: 1. V
Table 10. MARGIN MODE AC Characteristics
(T
Note: 1. V
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C801 are in the ’1’
state. Data is introduced by selectively program-
ming ’0’s into the desired bit locations. Although
only ’0’ 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
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
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
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
A10
PP
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
light (UV EPROM). The M27C801 is in the pro-
gramming mode when V
E is pulsed to V
applied to 8 bits in parallel to the data output pins.
The levels required for the address and data in-
puts are TTL. V
0.25V.
V
= –1mA
IN
IL
V
IH
Test Condition
IL
CC
. The data to be programmed is
–0.3
11.5
Min
3.6
2
is specified to be 6.25V
PP
PP
PP
.
.
Min
2
2
1
1
1
2
2
input is at 12.75V and
V
CC
Max
12.5
0.8
0.4
50
50
10
+ 0.5
Max
M27C801
Unit
mA
mA
V
V
V
V
V
A
Unit
7/16
s
s
s
s
s
s
s